When Merlin, a young powerful warlock, arrives in the kingdom of Camelot, he must hide his magic from everyone or be put to death. After saving Prince Arthur's life, Merlin is appointed as his personal manservant. The two experience many adventures, over the course of which they come to respect and trust one another. But when Uther's actions eventually cause his ward, Morgana, to turn against Camelot and pursue a path of destruction, Merlin and Arthur must join forces with friends, old and new, to protect their home and secure their destinies.