It's been a year since Morgana went missing. After a long search, she is finally found wandering in the woods, and nobody but the King can rejoice more. Morgana tries to put the past behind her, and she tries to make Merlin her friend again. But Merlin does not fall for her ploy, as he knows she is not the Morgana he used to know. He soon discovers that Morgana is part of a plot to drive Uther insane, and help a rival king conquer Camelot.