STARGATE
In 1928, a strange device is found by an expedition, in Egypt. In the present days, the outcast linguist Dr. Daniel Jackson is invited by a mysterious woman to decipher an ancient hieroglyph in a military facility. Soon he finds that the device was developed by an advanced civilization and opens a portal to teletransport to another planet. Dr. Jackson is invited to join a military team under the command of Colonel Jonathan 'Jack' O'Neil that will explore the new world. They find a land that recalls Egypt and humans in a primitive culture that worship and are slaves to Ra, the God of the Sun. But soon they discover the secret of the mysterious "stargate".

CHILDREN OF THE GODS
When powerful aliens come through Earth's Stargate, Colonel Jack O'Neill returns to Abydos to retrieve Daniel Jackson, who has discovered that the alien transit system includes much more than the two planets.

THE ENEMY WITHIN
Major Kawalsky is possessed by a Goa'uld, and the SGC must find a way to remove it without killing him.

EMANCIPATION
An alien civilization is forced to reconsider their views on women when Carter rebels against their social customs.

THE BROCA DIVIDE
Members of S1 become infected with an alien virus that turns them into primative beings. Dr. Fraiser must find a cure to save the team and the alien population from whom it was contracted.

THE FIRST COMMANDMENT
S1 must stop a renegade Stargate commander, who has gone mad and set himself up as a god on an alien planet.

COLD LAZARUS
The team discovers a crystaline alien species with the capability of assuming human form. O'Neill comes to terms with the death of his son.

THE NOX
Pressed by the government to acquire new technologies, S1 is led to a world inhabited by a seemingly primative race. When Apophis arrives, S1 ambush him with disasterous consequences.

BRIEF CANDLE
S1 discovers a race of attractive people who age extremely rapidly. The situation becomes personal when O'Neill begins to suffer from the same accelerated aging, and must live out the rest of his life on the planet.

THOR'S HAMMER
Teal'c and O'Neill are transported to an underground cage designed by the Asgard to protect an alien world from the Goa'uld. Teal'c cannot escape the labyrinth while his larval Goa'uld lives.

THE TORMENT OF TANTALUS
S1 tracks down Catherine Langford's fiance, who took the first Stargate trip in 1945, and discovers an ancient meeting hall that may hold the secrets of the universe itself.

BLOODLINES
Teal'c returns to Chulak to stop his people from implanting his son with a larval Goa'uld, but must sacrifice himself to save him.

FIRE AND WATER
Daniel is taken captive by an alien with a hidden agenda, while S1 is made to believe he is dead.

HATHOR
The banished Goa'uld Hathor is found in an ancient sarcophagus Earth, and takes over the S.G.C. with hopes of raising a new army against the System Lords.

SINGULARITY
A mysterious affliction wipes out the entire population of a planet, plus an SG team -- except for one young girl. Carter befriends her, but learns that she is being used by the Goa'uld.

COR-AI
Teal'c must stand trial for a crime committed while he served as first prime of Apophis when a villager on an alien world identifies him as the Jaffa who killed his father.

ENIGMA
The S1 team rescues a group of advanced humans from a planet near destruction, and must find a new home for the refugees before the Pentagon gets their hands on them.

SOLITUDES
Colonel O'Neill and Captain Carter are separated from Jackson and Teal'c during a Stargate journey, and are trapped on a desolate ice world with no way of escape.

TIN MAN
When S1 visits the underground warehouse of an advanced alien civilization, the area's caretaker transplants their minds into robotic duplicates -- a "gift" of immortality.

THERE BUT FOR THE GRACE OF GOD
An alien artifact transports Daniel to an alternate reality, where he is not a part of the Stargate program and the Goa'uld -- led by Teal'c -- are invading Earth.

POLITICS
Senator Kinsey arrives at the SGC to investigate the program and determine whether the great drain on the U.S. budget is worthwhile, prompting the team to recall missions from the past year.

WITHIN THE SERPENT'S GRASP
S1 escapes through the Stargate before it is shut down, and learns that Daniel's alternate reality vision is true: Apophis is moving to attack Earth from above. The team must stop Apophis and his son, Klorel, who inhabits the body of their friend Skaara.

THE SERPENT'S LAIR
With S1 trapped on Klorel's ship. It seems that Earth is doomed as the Pyramid Ships prepare to destroy Earth.

IN THE LINE OF DUTY
While on an off-world rescue mission, Sam becomes possessed by a Goa'uld symbiote.

PRISONERS
After assisting a man that is a fleeing murderer, the team is sent through a Stargate to Hadante, a penal world where brute strength and raw power rule.

THE GAMEKEEPER
S1 travel to P7J-989, where they discover a beautiful garden and a dome full of strange metallic chambers, each containing an unconscious person. As the team inspects the chambers, they are trapped and knocked unconscious.

NEED
When Daniel is being manipulated by an alien princess, S1 is forced to labor in the mines.

THOR'S CHARIOT
S1 must return to Cimmeria in order to help fight off a Goa'uld invasion while searching for a mysterious hall put there by the Asgard Thor.

MESSAGE IN A BOTTLE
While exploring a new planet, S1 find an orb that sends out electromagnetic signals. Thinking it's a time capsule of some sort, they return to Earth to begin their tests, however, the object begins to heat up among other things.

FAMILY
Teal'c's son Rya'c is kidnapped by Apophis and SG1 tries to rescue him. When Rya'c is recovered he denounces his father and helps to capture the team. They escape, but will they be able to return to Earth and cure Rya'c?

SECRETS
Jackson and Teal'c travel back to Abydos to fulfill a promise he made to Shau're's father Kasuf. When they arrive, Daniel learns that his wife, whom he hasn't seen since she was taken by the Goa'uld, is nine months pregnant. The father is Apophis, who plans to use the baby as his new host.

BANE
While exploring planet BP6-3Q1, Teal'c is stung by a strange insect which causes him to become ill and almost die.

THE TOK'RA PART 1
Through a dream, Captain Carter sees herself as Jolinar of Malkshur, running through a maze of blue walls and brightly coloured people. She stops at a DHD to dial an address. This, so she claims, is the Tok'ra base. So, S1 goes off the contact the Tok'ra. Meanwhile, Captain Carter's father, Jacob, has cancer and it is getting worse.

THE TOK'RA PART 2
The Tok'ra turns down a request for an alliance against the Goa'uld because Earth doesn't offer enough rewards to justify the security breach. Selmak, a Tok'ra whose host is dying, requests a human host. Carter suggests her father, Jacob Carter, who is dying of cancer.

SPIRITS
S11 has not returned from its mission to Planet PXY 887, where they recently discovered an element, Trinium. After O'Neill becomes injured, Carter leads S1 through the Stargate to investigate and to negotiate a mining treaty with the inhabitants.

TOUCHSTONE
S1's mission is to return to PX7-941, or Madrona as the inhabitants call it, to study the effects of, and technology behind the "Touchstone" device. However, S1 is accused of stealing this artifact by the Madronans. They claim "Touchstone" has been taken by a group of people dressed in SGC uniforms who came and went through the Stargate leaving the inhabitants without any protection from the planet's deteriorating climate. As S1 tries to locate the device, they uncover a sinister government agenda.

THE FIFTH RACE
While on the planet P3R-272, S1 comes across an ancient device that downloads a vast amount of knowledge into Jack's brain. Jack has the task of helping Daniel solve ancient mysteries while trying to save himself from braindeath due to the overwhelming stress.

A MATTER OF TIME
S10 is on a planet when its sun becomes a black hole, and the Stargate link back to Earth threatens to destroy first Stargate Command and then the entire planet.

HOLIDAY
When the S1 team stumbles upon the chamber of former Goa'uld enemy Ma'chello, they fall victim to his powerful body-swapping invention. Ma'chello takes on Daniel's body and the young archeologist finds himself trapped in the body of an old and dying man.

SERPENT'S SONG
Pursued by Goa'uld, Apophis, throws himself on the mercy of S1. Despite his past evil, S1 grants him sanctuary. Apophis, who shows signs of having been tortured, is slowly dying and reveals that he is being pursued by an ancient and powerful Goa'uld named Sokar, the original god of death.

ONE FALSE STEP
During a routine reconnaissance mission, the UAV plane crashes into a cactulike plant. Sent to recover the plane, S1 discovers that the inhabitants have begun falling ill, and before long a plague of illness sweeps the race.

SHOW AND TELL
A young boy gains entry to the SGC and tells the S1 team he has come with his mother, a member of the invisible Reetou race. The boy announces that the Goa'uld destroyed his planet Reetalia and now Reetou rebels intend to kill all human beings to prevent possible future hosts.

1969
S1 departs on a mission only to find themselves in the missile silo where SGC Command was built upon, 30 years ago. Due to solar flare emissions warping the Stargate wormhole, they've traveled back in time. Captured by the U.S. military and unable to tell them anything without altering their own history, they must escape with the help of their commander, General Hammond (now only a Lieutenant, and 30 years younger), and somehow gain access to a Stargate and reverse the procedure so they can return to their own time.

OUT OF MIND PART 1
Awakening from cryogenic suspension, O'Neill finds himself in a futuristic version of the SGC. Doctors hook O'Neill to a device which turns his memories into holograms and then question him for information about races able to defeat the Goa'uld.

INTO THE FIRE PART 2
General Hammond leads a daring rescue attempt with the help of Teal'c to retrieve S1. Meanwhile, on board the Goa'uld ship, one of the members of the team gets a present from Hathor... is it too late to save Colonel O'Neill?

SETH
The Tok'ra believe that the ancient Goa'uld System Lord, Seth, is hiding on Earth posing as a religious leader. S1 and the Tok'ra Selmak must find him without falling victim to his brainwashing powers.

FAIR GAME
During an awards ceremony where Carter is awarded a promotion to Major, O'Neill is transported to a space ship orbiting Earth. Here he meets a non-humanoid alien who calls himself Thor. Thor tells O'Neill that the Goa'uld are upset with Earth about the death of Hathor and are now considering retaliation. The Asgard wish to include Earth in the protected planets treaty, which will save them from an attack. The negotiations are to take place at the SGC.

LEGACY
Daniel starts going crazy after S1 visits a planet where S1 found nine dead Goa'uld. The doctors believe he is suffering from the effects of traveling through the gate.

LEARNING CURVE
While employing the help of a planet's highly intelligent children for a project, the team discovers their horrific imposed fate when they reach a certain age.

POINT OF VIEW
Alternate reality versions of Carter and Kawalsky use the quantum mirror to arrive at a secured building in the top secret Area 51 in "our" universe. In their reality Jack was married to Dr. Carter before his death at the hands of the Goa'uld, Teal'c is still in the service of Apophis, Kawalsky is still alive, and Carter is a civilian Doctor. Dr. Carter begins to suffer from temporal distortion caused by travel through the quantum mirror. "Our" Carter determines that her alternate will die unless she is returned to her alternate reality - unfortunately that's also a death sentence since the Goa'uld have swarmed that universe's SGC. S1 must use their present day resources and knowledge to return with their new acquaintances and overthrow the Goa'uld.

DEADMAN SWITCH
The team are captured by a bounty hunter who plans to use them to capture a Goa'uld, but all is not as it seems.

DEMONS
S1 arrives at a medieval village and frees Mary, a young woman who has been left outside tied to a stake. Simon, friar of the village and Mary's friend, explains that Mary is a sacrifice for the demon that plagues their village. The Canon chose her when he mistook her illness for an evil possession. When the demon arrives and finds no sacrifice, he promises to destroy the village the next day unless five humans are left for sacrifice. S1 recognizes this "demon" and plot to destroy it, but the Canon pronounces S1 evil and condemns them to be sacrificed. S1 must convince Simon to go against everything he believes in order to save themselves and rid the village of its demon forever.

RULES OF ENGAGEMENT
Upon exiting the Stargate, S1 finds itself in the midst of battle. A group of SG soldiers battle a Jaffa army. Believing the soldiers to be the missinin-action S11 team, O'Neill and the others provide assistance. Much to their surprise, the mystery SG team turns their weapons on S1.

FOREVER IN A DAY
In the middle of a battlefield Daniel and Amonet meet in a tent. Amonet uses her hand device on Daniel, and he passes out. When he awakes Amonet (and Sha're) are dead, their body's stored in the mortuary. Daniel is really depressed and resigns from the Stargate Project, but when he wakes up next morning Sha're is right beside him. All signs in life tell Daniel that Sha're is dead, he even went to her funeral. Yet he keeps seeing her everywhere, in his bathroom, at the SGC, even at her own funeral. Is there something keeping her back from finding peace?

PAST AND PRESENT
S1 travels to a planet whose inhabitants seem to be suffering from mass retrograde amnesia. They have no memory of their lives before the unknown event they call the "Vorlix", and report that their elders and children are missing. The planet faces complete devastation unless the people's memories can be restored. The inhabitants introduce Ke'ra, a brilliant and personable young woman who has come to be the leader of her people. She and Daniel Jackson develop a mutual attraction. Ke'ra returns to Earth with S1 in hopes that her existing research on the Vorlix may help them find a cure. But as the investigation progresses, S1 begins to suspect that Ke'ra may not be who or what she appears.

JOLINAR'S MEMORIES PART 1
The Tok'ra come to Earth and tell Sam that her dad has been captured and is being held prisoner by Sokar on a planet Earth people would describe as hell. The team decides to go rescue him and takes a cargo ship to the planet because there is no stargate there. Due to the thick atmosphere Jack, Daniel, Sam, and Martouf take descent pods down to the surface while Teal'c stays in the ship to keep it in orbit around the planet. The team must locate Jacob and find a way to escape the planet. Since Jolinar has escaped from there before it is possible, if only Sam could remember how...

THE DEVIL YOU KNOW PART 2
The Tok'ra find out Sokar is going to take his ship in orbit around Netu, and come up with a plan to kill him: since they don't have any weapon capable of penetrating Sokar's shields, they are going to launch some kind of nuclear device into the core of Netu. There it will build up critical mass, and the planet will explode, along with Sokar and his ship. The device gets launched, but Jack, Daniel, Sam, her dad, and Martouf are still on the planet. They now have 12 minutes to get off of the planet, but first they have to deal with an old enemy...

FOOTHOLD
S1 returns from a mission, and needs to report to the infirmary to see if they brought back any illnesses. Meanwhile they hear there's been a chemical spill somewhere in the complex. Once in the infirmary, every team member needs a precautionary injection, but Dr. Fraiser injects them with a sedative, rendering them unconscious. Teal'c's symbiote protects him though - he wakes up and sees General Hammond and Fraiser in a conversation with a few unknown aliens. Teal'c escapes and manages to wake up Sam. Sam makes her way out of the complex unseen, while Teal'c distracts the enemy. Once outside, Sam calls Colonel Maybourne, which she meets in a cafeteria. He is accompanied by Jack and Daniel, who explain Sam that she has been exposed to the chemical spill's gas and has been hallucinating since. Has she really, or are there indeed aliens impersonating everyone in the SGC?

PRETENSE
An unknown user attempts to come through the gate. It is Narim, the Tollan, who first sends Schrodinger, Sam's gift to him, to identify himself. He follows, using Tollan technology to pass through the iris. He tells S1 that Klor'el/Ska'ara has crashed in a death glider. Klor'el was temporarily not in control, and Ska'ara has requested that the Tollan restore his body to him. Jack and Daniel have been chosen as archons to represent Skaara in a Triad, a Tollan trial to decide whether the body belongs to Klor'el or Ska'ara. Meanwhile Sam and Teal'c find out that the Goa'uld who accompanied Klor'el's archon do strange things in their free time...

URGO
S1 travels to a paradisical-appearing planet... only to step immediately back out of the Stargate with no memory of their trip. They soon find themselves engaging in odd behavior, and find out that a computer chip has been planted in their minds during their memory blackout. The program in the chip, Urgo, can manifest itself as a friendly-looking, curious entity, that only they can see, because it interacts directly with their perceptions. Urgo can influence their actions, and doesn't want to be shut down or sent back to his creator. The team has to contact Urgo's creator, Togar, and convince him to remove the chips, or shut down Urgo.

A HUNDRED DAYS
During an expedition to a civilized planet, the stargate of that world is hit by a meteor, trapping O'Neil on that world without any apparent hope of rescue. While he slowly gives up his old life and joins in with the relatively primitive civilization of this world, the SG team tries to find a way to reactivate the buried but still-intact stargate and rescue him. The only means to do so is to send Teal'c through on a suicidal one-way mission to tunnel out of the stargate before his air runs out.

SHADES OF GREY
When the Tollan refuse to share technology, even after S1 saved the planet from a Goa'uld attack, Jack gets angry and steals a device from them. Jack does not see how that was wrong, and can choose between court martial or early retirement. He prefers the retirement, and is contacted by Colonel Maybourne. Maybourne tells Jack that there is an offworld base that has a few teams that retrieve alien technology the hard way when the SG teams fail to do so the diplomatic way. Jack requests to be sent to Eudora (from the episode "A Hundred Days") to retire. From there he then dials Maybourne's offworld base to become a team leader there.

NEW GROUND
The Bedrosian military are convinced that S1 are working for their enemy, the Optricans. While imprisoned, Teal'c evades capture but is blinded. He relies on a Bedrosian archaeologist to help free the rest of his team.

MATERNAL INSTINCT
Daniel knows that the Harcesis is on a planet called Kheb; Bra'tac knows how to get there as it is the planet that the Jaffa believe to be the destination of their soul after death (P9C-292). They find a Zen monk who teaches Daniel about the ways of Ascension and an ascended being (Oma Desala) saves the child.

CRYSTAL SKULL
While visiting a new world, the team discovers a huge pyramid, empty but for a central platform above a vast abyss, accessible by a single walkway. Upon the platform is a skull fashioned from pink crystal, that Daniel cannot resist looking into - at which point he disappears. Unable to locate Dr Jackson, S1 return to Earth hoping to find a way to retrieve their lost friend. The only clue appears to be a similar skull found on Earth by Dr Jackson's grandfather many years before...

NEMESIS PART 1
The episode opens with Daniel Jackson confined to the infirmary recovering from an appendectomy. The rest of team is told to take a vacation. O'Neill wants to go fishing and Carter wants to stay on base to work on a project. As O'Neill is leaving he is suddenly transported to Thor's ship where he encounters many mechanical spiders. When he finds Thor he is informed these are replicators, an even greater enemy to the Asgard than the Goa'uld. He tells O'Neill that they (Asgard) need his help to defeat them.

SMALL VICTORIES PART 2
Despite the defeat of the Replicators, one survived the crash and managed to infest the Russian submarine Blackbird to replicate a new army. Meanwhile, Thor returns to Earth and wants Major Samantha Carter's assistance to defeat the Replicators from taking over Othala, by using "stupid ideas" as a means of stopping them.

THE OTHER SIDE
An alien race, the Eurondans, contact the SGC and ask for help. S1 delivers humanitarian aid to the aliens, who have been devastated by war by a hostile power, but must make a decision when Alar, the Eurondan's representative, asks for military assistance against their enemy.

UPGRADES
The Tok'ra ask the S1 to test some mysterious alien armbands, and they prove to confer vast super strength and speed on its wearers. S1 put their new-found "powers" to good use, but it soon becomes clear the armbands have a time limit that endanger the team in the midst of a critical mission.

CROSSROADS
Teal'c's former love Shan'auc travels to Earth to ask for assistance - she has a way to tap into the memories of her symbiote and convince it that the Goa'uld are evil.

DIVIDE AND CONQUER
During a meeting of the Tok'ra High Council, one of the SGC soldiers goes berserk and attacks them before taking his own life. It soon becomes clear that the Goa'uld have a new weapon - a mind control technique that can turn anyone into a preprogrammed assassin. SGC soon realizes that Jack and Sam may be the next programmed assassins.

WINDOW OF OPPORTUNITY
When an alien scientist activates an Ancient device that the Ancients created for time alterations, Jack and Teal'c get caught in a time loop.

WATERGATE
The Russians ask for assistance when they reveal they have the second Stargate, but it has become locked onto an alien water planet, not only preventing the SGC's Gate from functioning but endangering the Russian base.

THE FIRST ONES
An archaeological team makes an amazing discovery - a planet holding primordial Goa'uld symbiotes. But the planet also is home to the Unas, the first race that acted as a host to the symbiote, and the team and S1 are soon in danger from the symbiotes.

SCORCHED EARTH
S1 helps transfer the residents of a Goa'uld slave planet to a new world, but soon find the planet is the target of a terraforming effort that will wipe out its new inhabitants.

BENEATH THE SURFACE
S1 are brainwashed and given memories of new lives and put to work as mining slaves on an alien world. While Hammond tries to find out if they're still alive, the S1 must struggle with their returning memories and plot their escape.

POINT OF NO RETURN
Martin Lloyd, a conspiracy nutjob, calls up the SGC but has accurate knowledge of the Stargate. Martin claims to own a spaceship and is dismissed as a crackpot, but a series of incidents suggests that there may be more to his claims.

TANGENT
A test of the X-301, an experimental aircraft adapted from two Goa'uld death gliders, goes awry sending O'Neill and Teal'c hurtling out of Earth's orbit. As the X-301 streaks through space at a million miles an hour, the SGC struggles to find a way to retrieve it. But after an attempt to alter the aircraft's course fails, things look grim. Daniel Jackson seeks the help of off-world allies. He learns that the Tok'ra have a ship capable of reaching O'Neill and Teal'c, but it is on a covert mission in Goa'uld-controlled territory. With time ticking down and the lives of their comrades hanging in the balance, Carter and Daniel must locate the Tok'ra ship, intercept the X-301, and pull off a daring rescue.

THE CURSE
When Daniel Jackson's old archeology professor, Dr. Jordan, dies in a mysterious lab explosion, Daniel pays a return visit to his old academic stomping grounds. But as he reacquaints himself with his former colleagues, he begins to suspect that Dr. Jordan's death may not have been an accident. He discovers that one of the items the professor was studying, an ancient Egyptian jar, contains a perfectly preserved Goa'uld symbiote. Apparently, a crack in the vessel compromised the sedative solution within, killing the creature. But further investigation reveals a second jar may have existed. With a Goa'uld apparently stalking the campus and the local community abuzz with talk of an ancient curse, Daniel must unravel the mystery before it's too late.

THE SERPENT'S VENOM
While visiting Chulak to gather support for a Jaffa rebellion, Teal'c is captured by the Goa'uld. The rest of S1, unaware of his fate, are dispatched to thwart a burgeoning alliance between Apophis and Heru-ur. But when they arrive at the neutral location chosen for the meeting - an ancient minefield floating in space - they discover that Heru-ur has brought along a gift to seal the deal: a battered but defiant Teal'c. S1 is torn. Do they try to rescue Teal'c? Or, as Jacob Carter argues, does the success of their mission outweigh the life of their friend?

CHAIN REACTION
When General Hammond announces he is stepping down as head of the SGC, O'Neill suspects that there is more to his decision than he is letting on. And, as it turns out, O'Neill is right as he discovers that the NID was behind the change of command. Fed up with the general's inability to acquire alien technology through whatever means necessary, it pressured him into resigning. When Hammond's replacement breaks up S1 and assigns Carter the task of building a planet-killing Naquadah bomb, O'Neill takes matters into his own hands. He decides to take on the NID, but his success will rest in the hands of a most unlikely ally: Colonel Maybourne.

2010
Nine years in the future, the Goa'uld have been defeated thanks to an alliance with an advanced alien race. Transportation technology and off-world Stargate travel is now commonplace. However, Carter finds out that most of the human race has secretly been rendered sterile by Earth's new allies. She and the other S1 team members must rig the Stargate for time travel (first done in the episode "1969") and send a message back to their counterparts in 2001 to prevent contact with the alien race.

ABSOLUTE POWER
Daniel recovers Apophis's son, the Harcesis. He has the memories of all the Goa'uld, which SG Command wants to obtain so that they can defeat their enemies. Daniel is given all the knowledge, but soon begins to use it in a tyrannical fashion as he usurps authority to build a ring of killer satellites around Earth capable of repelling the Goa'uld. Soon, only Jack can get close enough to stop him before Daniel completely takes over the world in the name of peace.

THE LIGHT
A member of another SG team, returning from an alien planet, commits suicide. The rest of his team begins to go into comas, and Daniel, who also visited the planet, attempts suicide. When S1 goes to the planet, they discover a hypnotic light show that not only induces memory blackouts, but alters their physiology so that they cannot leave the planet without becoming terminally depressed and ultimately dying of system shutdown. Trapped on the planet, they meet a young boy, Loran, who is apparently immune to the effects of the light system but who lost his parents. The team must figure a way to overcome the addiction or remain trapped on the planet forever.

PRODIGY
During a visit to the Air Force Academy, Carter makes the acquaintance of Jennifer Hailey, a promising young cadet with a rebellious streak. Carter sees great potential in her, but Jennifer seems determined to sabotage her future with the Air Force. She is fiercely independent, opinionated, and resentful of Carter to whom she is constantly being compared. On the other hand, Hailey is brilliant and Carter eventually decides to show her what she can look forward to if she stays the course - by bringing her through the Stargate. The two of them visit an offworld research base where O'Neill and Teal'c are on security detail, "babysitting" a group of ungrateful scientists. But the seemingly routine mission takes a deadly turn when they are attacked by alien life forms composed of pure energy. Trapped and cut off from the Stargate, S1 must make a desperate gamble to reach freedom before it's too late.

ENTITY
An "entity" from P9C-372 invades the computer at Stargate Command through the MALP transmission. It starts controlling cameras and learning. When Major Samantha Carter starts communicating with it, it invades her and takes control of her.

DOUBLE JEOPARDY
S1 returns to a planet they helped free from Goa'uld enslavement. Once, with the assistance of S1, the people of this world were able to rebel against the forces of Heru'ur and win their freedom. Now, they face a vengeful Cronus determined to make them pay for their insolence. S1 is prepared to lead them once again, but it turns out their former allies are not so eager to answer the call to arms. After all, they were promised that if they buried their gate, they would be safe. Instead, the Goa'uld returned in ships - and the planet's inhabitants paid a terrible price. O'Neill and his team must win their confidence before they can win the battle against Cronus. Fortunately, they have help in the form of their robot duplicates, eager to assist them on this doubly-difficult mission.

EXODUS PART 1
The SGC are loaning their Goa'uld Mothership to their good friends and allies, the Tok'ra, so they will be able to move to a planet that is not on the gate system. However, Tanith is caught out and tells Apophis where the Tok'ra are.

ENEMIES PART 2
The supernova causes S1 and Apophis' ships to jump 4 million light years. S1 hides from Apophis, but after coming out again, they find Apophis' mothership completely abandoned. It is discovered Apophis and his Jaffa fled the ship after it is taken over by Replicators. They infest the Ha'tak, and furthermore, Apophis has brainwashed Teal'c, and is now working against his team.

THRESHOLD PART 3
Even after Apophis' death, Teal'c is still brainwashed. The only way to break the brainwash is the Rite of M'al Sharran, a ceremony in which the symbiote is removed until the Jaffa makes his or her choice whether to die free, or a slave.

ASCENSION
After a mission to Velona, where they find a weapon capable of defeating the Goa'uld, Major Samantha Carter is followed by an ascended being named Orlin, who warns her not to use the weapon.

THE FIFTH MAN
S1 is forced to abandon Colonel Jack O'Neill and the team's fifth member, Lt. Tyler. However, before they can reinforce themselves, they are stopped and pulled off duty, since Stargate Command has no recollection of Tyler. Meanwhile, O'Neill and "Tyler" hide from Jaffa patrols.

RED SKY
A mission to K'tau causes the planet's sun to die out, after the wormhole traveled through it, causing it to be unstable. The Asgard, who protect the planet, aren't allowed to intervene; so the Tau'ri are forced to help them themselves. Unfortunately, some of the natives won't allow it.

RITE OF PASSAGE
On her sixteenth birthday, Cassandra Fraiser falls ill and begins exhibiting telekinesis. Soon, they learn that when she was younger, Nirrti experimented on her and other children like her. S1 must travel back to Hanka to search for a cure.

BEAST OF BURDEN
Chaka and other Unas are kidnapped and sold as slaves on another planet. While S1 observes, Dr. Daniel Jackson and Colonel Jack O'Neill are captured, and Major Samantha Carter and Teal'c plan to break them out.

THE TOMB
After a team from the Russian Stargate Program goes missing on P2X-338, S1 and another Russian team are sent to retrieve them. In their search, they find a mysterious tomb, which housed a deadly enemy, picking off the Russian team members one by one.

BETWEEN TWO FIRES
The Tollans are suddenly willing to give away their Ion cannons to the Tau'ri to protect Earth. Omoc died, and Narim believes he was murdered, a crime which has not been committed in their society for years. S1 comes to the conclusion that those two events are connected somehow, and a conspiracy is brewing.

2001
S1 makes contact with a technologically advanced race known as the Aschen (a race of people S1 from an alternate future tried to warn current S1 not to make contact with). While they form an alliance, Dr. Daniel Jackson and Teal'c find clues about the Aschen past and when the truth about the Aschen is finally revealed, S1 must intervene or risk history repeating itself all over again.

DESPERATE MEASURES
Major Samantha Carter is kidnapped by masked assailants, who also took a symbiote from the Russians. The rest of S1 do all they can to find her. Meanwhile, she finds out who is responsible for her kidnapping: Adrian Conrad, who is dying from an incurable disease and wants to experiment on her, so he can take a symbiote to cure him of all illness, and then safely remove it.

WORMHOLE X-TREME!
S1 watches a television commercial about a new sci-fi show called "Wormhole X-Treme!", which has very similar attributes to the Stargate Program. While Colonel Jack O'Neill investigates, he learns that Martin Lloyd pitched the idea of the show to the studio.

PROVING GROUND
S1 is training a group of recruits to test their limits when joining an SG team. After a training exercise, it becomes apparent that Stargate Command has been overrun. It's up to Colonel Jack O'Neill and the four young recruits to find a way to stop the incursion before it's too late.

48 HOURS
After escaping the Goa'uld, and killing Tanith, the Stargate shuts down just as Teal'c is still in the wormhole. S1's efforts to halt the Stargate Program are threatened when Colonel Frank Simmons of the NID gives them a 48-hour deadline to save him or else the Stargate Program will continue, resulting in Teal'c's death.

SUMMIT PART 1
The Tok'ra ask Dr. Daniel Jackson to covertly spy on a summit between all the Goa'uld System Lords, so the Tok'ra can kill them, but learns that a new System Lord is to join them, one long thought to be long dead.

LAST STAND PART 2
While Dr. Daniel Jackson learns the identity of ruthless System Lord Anubis, who committed atrocities that even the Goa'uld find horrifying, his plans to rescue Sarah Gardner could blow his cover. Meanwhile, Zipacna sends his Jaffa to attack the Tok'ra base on Revanna, forcing the rest of S1 into a desperate fight for survival as they attempt to weather the onslaught and look after Lt. Kevin Elliot who has been left badly wounded.

FAIL SAFE
An asteroid is on a collision course for Earth. The Asgard can't help, and the Tok'ra are hard to find, so they return to Revanna to repair a Tel'tak, so S1 could deliver a Nuclear warhead to destroy it. However, they soon learn that the asteroid may not be natural in origin.

THE WARRIOR
S1, especially Teal'c, join a camp full of rebel Jaffa, led by K'tano, who wish to stop the Goa'uld, and have more Jaffa join their rebellion. Teal'c decides to change his allegiance to his people, and the rest of the team suspect that K'tano, the former First Prime of Imhotep, is hiding something from them.

MENACE
S1 finds Reese, the last of her people on her home planet. They take her back and soon learn that she is an android. Furthermore, she can create Replicators, and they soon become a serious threat to Stargate Command.

THE SENTINEL
The Goa'uld System Lord, Svarog, is planning on taking back Latona to his control. The only way to stop him is the Sentinel, a piece of technology capable of defeating him. Unfortunately, rogue NID agents once tampered with the device, and S1 get to be the ones responsible to make it operational again.

MERIDIAN
S1 have discovered that the Langarans have Naquadria, a more volatile version of Naquadah, and they plan to use it as a weapon, since the planet's three nations are on the verge of war. Dr. Daniel Jackson prevents an accident, but is stricken with radiation poisoning in the process, and will die if they don't save him in time.

REVELATIONS
Following the loss of Dr. Daniel Jackson, Anubis has made his fleet immune to Asgard defenses, and he has captured Thor. S1 must assist Heimdall to evacuate all Asgard knowledge from Adara II, before Anubis gets his hands on them.

REDEMPTION PART 1
The SGC has come under attack from Anubis, who has a device that can use one Stargate to destroy another. With a wormhole dialed in to Earth's stargate, the SGC can not contact its off-world allies for help. Carter works furiously to find a solution. Meanwhile Teal'c is off-world attending his wife's funeral and his son believes she would not have been killed if Teal'c had not joined the fight against the Goa'uld. Bra'tac and Teal'c search for the planet Anubis is attacking Earth from and prepare to go into battle against him.

REDEMPTION PART 2
Wanting proof that the Goa'uld are not gods and can be stopped, Rya'c insists that Teal'c allow him to join in battle, so he can see for himself what the war is all about. Together with Bra'tac, they deduce the planet Anubis is attacking Earth from, and set out to make a strike at his weapon. Meanwhile, on Earth, the efforts continue to find a way of preventing the catastrophe an exploding Stargate would bring about.

DESCENT
S1 is on a salvage mission for a Goa'uld mothership left behind by Anubis.

FROZEN
The SGC's study of the Antarctic Gate site reveals a woman buried in the ice.

NIGHTWALKERS
Carter, Teal'c and Jonas investigate the death of a scientist with connections to the Goa'uld, and find a small town whose inhabitants are part of a secret experiment.

ABYSS
Jack is captured by a Goa'uld named Ba'al after a mission led by his symbiote goes wrong. His only chance of redemption lies in the hands of Daniel.

SHADOW PLAY
Jonas Quinn's mentor visits him to tell that their people are about to use a deadly bomb in their nation war.

THE OTHER GUYS
While escorting physicists off-world, SG1 is taken captive by a Goa'uld hoping to curry favor with Anubis. A pair of escaped physicists who revere SG1 must rescue them.

ALLEGIANCE
There is an assassin at the SGC's Alpha site, but is it a Jaffa or a Tok'ra?

CURE
S1 is offered a deal for a miracle medicine from an alien world.

PROMETHEUS PART 1
During a tour of the new X-303 (codenamed Prometheus), the ship is taken over by rogue NID agents.

UNNATURAL SELECTION PART 2
Using the Prometheus, S1 heads to a Replicator-controlled planet, where time moves faster due to Asgard technology. They hope to reverse the machine to freeze the Replicators in time.

SIGHT UNSEEN
After S1 returns to Earth with an Ancient device, incorporeal bug like creatures begin appearing in the SGC.

SMOKE & MIRRORS
Jack becomes the lead suspect in an assassination attempt on Senator Kinsey, and the rest of the team works to clear him.

PARADISE LOST
Maybourne offers to reveal the location of an offworld weapon but only if he's allowed to go. Once there, Maybourne tricks S1 and, along with Jack, is teleported to what he thinks is "utopia." However, the civilization that was once utopia is now dead.

METAMORPHOSIS
S1 discovers that Nirrti has continued her experiments to create a hok'taur (perfect human).

DISCLOSURE
The existence of the Stargate is disclosed to other major countries.

FORSAKEN
Offworld, S1 discovers a crashed prison-transport ship, and find themselves caught between the guards and the prisoners.

THE CHANGELING
Teal'c begins having dreams in which he and the rest of S1 are firemen, and he can't decide which reality is real.

MEMENTO
During a test flight of the Prometheus, the hyperdrive overloads, forcing S1 to go to a nearby planet to hopefully locate a Stargate. The only problem is that the gate has been buried in an unknown location.

PROPHECY
On P4237, Jonas begins having visions of the future and Lord Mot destroying S1.

FULL CIRCLE
S1 must defend Abydos from Anubis, who has come to take the Eye of Ra, an object of fabled power.

FALLEN PART 1
Jonas Quinn's search for the Lost City of the Ancients leads S1 to Vis Uban, where they find Dr. Daniel Jackson, who seemed to have de-ascended, and has no memories of his past life whatsoever. Meanwhile, Anubis is now using his superweapon to thwart his enemies, and is also made aware of Vis Uban. Quinn and Jackson must sneak onboard his mothership to disable the weapon, while Major Samantha Carter and Colonel Jack O'Neill use their F-302 fighter-interceptor to penetrate its shield, weakening the ship while Teal'c enlists the help of System Lord Yu-huang Shang Ti.

HOMECOMING PART 2
Anubis captures Jonas Quinn, and learns from him the location of Langara, and of the Naquadria. He plans to use the element to power his superweapon. While Anubis occupies the planet, Teal'c is having a hard time convincing Yu-huang Shang Ti's forces to attack Anubis, so he asks Yu's First Prime, Oshu, to convince Ba'al to take over the combined fleet of the System Lords.

FRAGILE BALANCE
S1 discovers that Jack has apparently regressed to the age of a teenager, and there is some mysterious connection to alien abductees and the Asgard.

ORPHEUS
A Jaffa-centric episode, and it's not a good day for the ones who like the Tauri. Teal'c's son Rya'c and Bra'tac are prisoners at a Jaffa death camp. S1, however, will not let their friends meet a lethal end and are determined to rescue them. Along the way, Teal'c becomes a prisoner and his fate looks very precarious.

REVISIONS
On a toxic planet, S1 finds a dome that protects its inhabitants, which are all linked to a computer, and one by one people begin disappearing without anyone else noticing.

LIFEBOAT
Daniel is possessed by the personalities of dozens of different individuals after boarding a ship holding bodies in suspended animation.

ENEMY MINE
An abandoned Naquadah mine is found but the Unas on the planet refuse to surrender it because they consider it holy ground.

SPACE RACE
Carter joins an alien in a space race, but they soon learn that someone is sabotaging the ships.

AVENGER 2.0
Dr. Felger creates a virus that will disable other gates, but after a test run, the virus spreads, disabling the entire gate network.

BIRTHRIGHT
S1 meets a group of female Jaffa who have rebelled against their System Lord, and due to the Jaffas' short supply of symbiotes, S1 offers to give them Tretonin.

EVOLUTION PART 1
Daniel is taken hostage when he goes to South America in search of an alien device, while Carter and Teal'c investigate the appearance of a powerful new enemy.

EVOLUTION PART 2
Daniel is taken hostage when he goes to South America in search of an alien device reputed to belong to the System Lord Telchak, and tied to his grandfather. Jack is sent to rescue him, while Carter and Teal'c investigate the appearance of a powerful new enemy intent on wiping out the System Lords one by one.

GRACE
When Carter goes on a mission to retrieve the Prometheus, she awakens to find herself alone on the ship and starts experiencing strange things.

FALLOUT
The SGC team is reunited with Jonas Quinn, who asks for their assistance as he's discovered a naquadriah chain reaction threatens to destroy Kalowona.

CHIMERA
Samantha Carter begins a relationship with a detective, from whom she must hide her life at Stargate Command. Daniel comes face to face with the Goa'uld who has taken his former girlfriend as a host.

DEATH KNELL
When Anubis's Super warriors attack the Alpha site, the self destruct is initiated, but not everyone is evacuated safely. Teal'c and Jack scour the surrounding area for Major Carter. Meanwhile, unrest amongst the allies increases as the possibility of a mole emerges.

HEROES PART 1
A film crew comes to the SGC to document the normal functions of the SGC.

HEROES PART 2
SGC is wracked by tragedy when one of their own is killed in a Goa'uld ambush.

RESURRECTION
Sam, Teal'c, and Daniel head to a warehouse where they hope to find a rogue NID operation. Instead, they find a girl held prisoner there and a bigger mystery than they ever expected.

INAUGURATION
The United States has a new President. Vice President (former Senator) Kinsey tries, once again, to take control of the Stargate Program, by persuading the new President that it is unsafe under Hammond's command.

LOST CITY PART 1
The SGC learns that Anubis is planning to attack Earth, so Jack once again downloads Ancient knowledge, hoping to find Ancient weapons capable of stopping the impending attack.

LOST CITY PART 2
Using Jack's Ancient knowledge, S1 goes to a planet in search of Ancient weapons but soon learn that the weapons are actually hidden on Earth. Will S1 be able to make it back in time before Anubis' attack begins?

NEW ORDER PART 1
While Sam and Teal'c go to the planet of the former human-form Replicators to contact the Asgard to cure Jack, Daniel and Dr. Weir must deal with Goa'uld System Lords who want the Ancients weapon the Tau'ri used to destroy Anubis.

NEW ORDER PART 2
As the Replicators overwhelm the new Asgard homeworld, S1 works to revive Jack, create an Ancients weapon to stop the invaders, and tries to find the missing Sam, who is held captive by the humanform Replicator Fifth in a virtual reality.

LOCKDOWN
A Russian Air Force Colonel comes to join SGC, as an alien creature shows up at the same time. The creature starts taking over members of the SGC. General O'Neill orders SGC to be locked down until the creature can be contained.

ZERO HOUR
Five days in the life of SGC as Jack assumes full command of the base and has to deal with a rapidly growing alien plant, the capture of S1 by Ba'al, arguing alien delegates, and a tricky traitorous System Lord.

ICON
Daniel attempts to aid a battle-ravaged society when the team's appearance sparks a war.

AVATAR
The SGC experiment with a virtual reality chair from the Gamekeeper's world (season 2), but Teal'c becomes trapped in a virtual loop against an undefeatable batch of Anubis drones.

AFFINITY
Teal'c moves into an apartment off-base where he becomes involved in a neighbor's problems. Meanwhile, Carter's boyfriend, Peter Shanahan, proposes and Carter tries to decide. Teal'c is then charged for murder and kidnapping and Daniel disappears while trying to prove Teal'c innocent.

COVENANT
A rich industrialist has evidence to prove that there is alien life on other planets and gives the governments of the world 24 hours to reveal the truth or he's revealing it. The Air Force tries to discredit him. Then Carter is given the job to tell him about the Stargate and the Goa'uld to try to convince him that the world doesn't need to know. The Trust also tries to silence him.

SACRIFICES
Teal'c is upset when his son Rya'c plans to marry a Jaffa woman of the Haktyl who he sees as not fit for him. Ishta comes to the SGC after she believes Haktyl has been compromised, and moves her people into the SGC until Carter finds them a suitable planet. Ishta attends a meeting of Haktyl warriors to discuss rising against the Goa'uld Moloc, but he finds out about the meeting and captures her.

ENDGAME
The Trust is behind a plan to steal the Stargate and eliminate the Jaffa and the Goa'uld with the Tok'ra poison.

GEMINI
The Replicator Carter that Fifth created contacts the SGC and tells them that she wants to be destroyed. She also tells them that Fifth has made all Replicators immune to the disruptor. But does she have an ulterior motive...?

PROMETHEUS UNBOUND
General Hammond and Daniel go on an expedition on the Prometheus to Atlantis. They encounter an abandoned Goa'uld Al'kesh and decide to salvage it. A Kull warrior rings aboard the ship and rings everyone else onto the Al'kesh leaving only Daniel onboard the Prometheus. The Kull warrior turns out to be a woman named Vala who wants to use Prometheus to evacuate her people from a Goa'uld occupied world. But is she telling the truth?

IT'S GOOD TO BE KING
The planet that Harry Maybourne was relocated to by the Tok'ra is targeted by a System Lord and S1 must go to rescue him. They discover that Harry has made himself king using knowledge of the Ancients...knowledge that may give them access to the Ancients' time-travel technology.

FULL ALERT
Robert Kinsey contacts General O'Neill and tells him that the Trust is trying to bring down the U.S. government, and want Kinsey's help. Kinsey and the Trust escape surveillance but when the trail leads to Russia, Daniel is captured when it is revealed that Kinsey tried to kill a leading Russian general...and Kinsey is now the host to a Goa'uld symbiote.

CITIZEN JOE
Jack is confronted in his home by an irate barber...who claims to know everything about the Stargate project and S1.

RECKONING PART 1
The Replicators threaten to overwhelm the galaxy, taking out the Goa'uld and then Earth. While Sam and Thor work to develop a weapon, Teal'c and Bra'tac lead the rebel Jaffa in taking a major temple and Jack and Jacob are forced to make an alliance with Ba'al.

RECKONING PART 2
Ba'al sends his fleet back to retake the planet Dakara, pitting his ships against Teal'c and the Jaffa. The RepliCarter tries to probe Daniel's mind to find all the Ancients' knowledge, while Jacob and Carter discover the Ancient weapon on Dakara and try to figure out how to use it to destroy the Replicators. And on Earth, the Replicators overrun the SGC as Jack orders a nuclear strike.

THREADS
While Daniel finds himself in a mysterious diner suspended between death and ascension, Jacob's fate takes an unexpected turn, Jack and Sam consider their romantic lives, and Anubis unleashes his plan for galactic destruction.

MOEBIUS PART 1
S1 and General O'Neill use the time-puddle jumper to go to Ancient Egypt to recover a ZPM. They successfully steal it but they find Jaffa surrounding the cloaked jumper. The future is altered and S1 never existed - Daniel teaches English as a second language, Carter proofreads astrophysics papers, and Jack retired from the Air Force and became a charter boat captain. Archaeologists find the video camera Daniel took with them with instructions to find the stargate, find Teal'c, and return to the past to correct the future.

MOEBIUS PART 2
The alternate S1 go to Chulak to find Teal'c and Daniel is killed. The alternate Carter, O'Neill, and Teal'c then go back to ancient Egypt to correct the past. They meet the original timeline Daniel who is the only survivor of a failed rebellion against Ra. Together, they must formulate a plan to steal the Stargate so that Ra can not take it with him.

AVALON PART 1
Lt. Colonel Cameron Mitchell comes to the SGC to be the newest member of S1, but he soon learns from General Hank Landry, O'Neill's successor, that the team has disbanded. Carter is at Area 51, Daniel is about to go to Atlantis, and Teal'c has left the program to be with his people. However, after Vala arrives on Earth with a tablet that supposedly tells the location of an Ancient treasure, Mitchell decides that finding it would be the perfect way to reunite S1.

AVALON PART 2
Daniel Jackson and Vala are seemingly transported into the bodies of two people in a distant galaxy on a planet populated by worshippers of a strange authority.

ORIGIN PART 3
Stargate Command encounters missionaries for a race of "gods" known as the Ori, who have zero tolerance for disbelievers.

THE TIES THAT BIND
In order to free themselves of the bond created by the Jaffa bracelets, Daniel and Vala must locate and return the items she stole from the bracelets' previous owner.

THE POWERS THAT BE
S1 and Vala go to a planet where she is still worshipped as Qetesh, and in order to prove to the people that the Ori aren't truly gods, she tells them the truth about herself. However, she is then forced to stand trial and possibly be executed.

BEACHHEAD
When the Ori create a force field around a free Jaffa planet, General Landry orders Carter to use a weapon that she designed against the Ori's forces.

EX DEUS MACHINA
A System Lord is found hiding on Earth, and he threatens to activate a naquadah bomb hidden somewhere in the United States if the SGC tries to go after him.

BABYLON
Offworld, S1 is attacked by Jaffa of the Sodan, and Mitchell is wounded in a fight with one of them. Thinking that the Jaffa was killed, the other Jaffa take Mitchell back to their village to be trained for a fight to the death.

PROTOTYPE
S1 finds a Goa'uld-Human hybrid in stasis in an abandoned Goa'uld lab and take it back to Earth to study, where they learn it was created using Anubis' DNA.

THE FOURTH HORSEMAN PART 1
After an SGC officer returns to Earth after unknowingly being infected with the Ancient Plague, the virus quickly spreads throughout the United States. Not wanting the Ori to gain control of the Milky Way Galaxy, Orlin yet again descends to help Carter find a cure.

THE FOURTH HORSEMAN PART 2
Members of the SGC start to become infected while Mitchell and Daniel try to capture the Prior.

COLLATERAL DAMAGE
When S1 travels to an Asgard protected planet, Colonel Mitchell is accused of a murder he did not commit...but has memories showing he did.

RIPPLE EFFECT
Alternate realities coming together at Stargate Command create alternate versions of S1 and some of their fallen allies.

STRONGHOLD
Ba'al kidnaps and brainwashes members of the Jaffa High Council in a bid to seize control of the Jaffa. Meanwhile, Mitchell debates whether to reveal the Stargate program to a dying friend who was once in line for his S1 position.

ETHON
S1 and the Prometheus travel to Tegalus to stop the Rand Protectorate from using an Ori-supplied superweapon to destroy their enemies, the Caledonians. But things turn grim when Daniel is captured and the Prometheus is caught in a firefight.

OFF THE GRID
The SGC learns that the organization of traders and mercenaries known as the Lucian Alliance is distributing a highly-addictive drug and S1 goes to investigate. But the situation becomes complicated when the planet's Stargate disappears...and S1 is held responsible.

THE SCOURGE
While a group of foreign delegates are touring the Gamma Site, a swarm of alien bugs linked to the Ori escapes containment...and adapt to become carnivorous.

ARTHUR'S MANTLE
Carter and Mitchell find themselves trapped on another plane, out of phase and invisible to everyone else. While Sam attempts to reverse the procedure, Mitchell goes after an assassin who is wiping out the Sodan.

CRUSADE PART 1
Vala Mal Doran uses a Lonrange communication device from the Alteran Home Galaxy to make contact with Earth through Dr. Daniel Jackson. She warns Stargate Command that the Ori are coming to the Milky Way and there may be no way to stop them.

CAMELOT PART 2
S1 goes to Camelot, after finding its address from Arthur's Mantle, in the hopes of finding a means to stop the Ori before they arrive in the Milky Way. Meanwhile, a new Supergate is discovered, where they plan to prevent the Ori from dialing in, but they are too late.

FLESH AND BLOOD PART 3
Four Ori warships arrive through the Supergate and wiped out most of the fleet protecting the Milky Way. Vala Mal Doran gives birth to Adria, who is growing quickly in order to spread the word of Origin. After the survivors of the battle are rescued, Stargate Command learns of the Ori's first target, Chulak.

MORPHEUS
The team goes off-world seeking a weapon against the Ori and ends up in serious trouble. Meanwhile, Landry is faced with having to decide whether or not Vala can be trusted to remain at the SGC.

THE PEGASUS PROJECT
Daniel and Vala travel to Atlantis in search of Merlin's anti-Ori weapon, while Sam, and Mitchell join forces with Dr. McKay to lock out the Ori supergate.

INSIDERS
Stargate Command faces off against their old nemesis Ba'al and his clones as Landry spars with the NID and Agent Barrett.

UNINVITED
While assisting S3 on an offworld mission, Teal'c encounters a savage alien creature that is killing the inhabitants. S1 investigates and learns that a parasite is to blame. The team suspects that the Ori are responsible, but they are shocked when they find out the real cause.

200
Mitchell eagerly awaits the next off-world mission, which will be his 200th trip through the Stargate. However, Martin Lloyd returns and seeks help with his movie script. The Pentagon orders the S1 team to assist because the decision makers believe a film about intergalactic wormhole travel will provide a good cover story for the Stargate program.

COUNTERSTRIKE
After Adria's followers on a planet are wiped out, she attempts to learn the location of this powerful new weapon.

MEMENTO MORI
Vala finds herself alone in a city with no memory of her identity or past life. Meanwhile, Mitchell and Teal'c question a man named Weaver who may have information about Vala's whereabouts.

COMPANY OF THIEVES
Mitchell attempts to infiltrate the Lucian Alliance in order to rescue members of the S1 team from the fallout of an Alliance civil war.

THE QUEST PART 1
The S1 team continues their quest for the Holy Grail, an Ancient device capable of killing the ascended Ori. They learn that an old nemesis is also looking for the device.

THE QUEST PART 2
S1, Adria, and Ba'al continue their quest to search for Merlin's weapon. They defeat the dragon then S1 and Ba'al are transported to another planet without Adria. The team search the new location and find Merlin, but being in stasis for so long has weakened him so Merlin passes all of his knowledge on to Jackson via an Ancient device. Now Jackson must build the weapon before Adria finds them.

LINE IN THE SAND
Mitchell, Carter and Teal'c arrive on a planet being threatened by the Ori. They decide that a line needs to be drawn and that the Ori must not be allowed to advance any further. Carter attempts to use the Ancient Merlin's technology to prevent the Ori from taking over the planet.

THE ROAD NOT TAKEN
Carter ends up in an alternate universe and changes the course of things in that universe.

THE SHROUD
The S1 team learns of yet another world that has been visited by a Prior of the Ori. However, this Prior hasn't issued any threats. The team waits for the Prior's return, only to be shocked by his identity.

BOUNTY
Col. Mitchell returns to Kansas to attend his high-school reunion with Vala when Stargate Command learns of an attack on S1 team members.

BAD GUYS
S1 finds an alien museum on another planet but are mistaken for a bunch of rebels that have taken hostages.

TALION
After a terrorist attack on a Jaffa summit leaves many dead and Bra'tac seriously injured, Teal'c goes on a one-man quest for revenge.

FAMILY TIES
Vala's father Jacek contacts SGC claiming to have vital information that could impact the survival of Earth. Meanwhile, Gen. Landry's ex-wife pays a visit.

DOMINION
S1 gets caught in the middle when Ba'al and Adria compete for domination of the galaxy.

UNENDING
The S1 team extends a small time frame to several years to survive an attack of the Ori and tries to find a solution to solve their problem.

STARGATE: THE ARK OF TRUTH
S1 embark on a mission to the Alteran Home Galaxy to find the Ark of Truth, an Ancient device capable of defeating the Ori once and for all, only to run into difficulty as they have to face not only the threat of the Ori but also face an old enemy that may prove to be everyone's undoing.

STARGATE: CONTINUUM
Ba'al travels back in time and prevents the Stargate program from being started. SG-1 must somehow restore history.