In the third season, Merlin and Arthur face greater threats to Camelot, including the rise of the evil sorceress, Morgana.
The second season explores the consequences of Merlin's actions in season 1, as he and Arthur face new challenges and enemies.
The first season introduces us to the world of Camelot, where magic is forbidden. We meet Merlin, a young warlock who arrives in Camelot and becomes the servant of Prince Arthur.
