Episode Description: Beware, spoilers! To read - hover over the text.
Under the castle of Camelot was found an ancient tomb filled with treasures. Gaius realizes that this is the tomb of Cornelius Siena, the evil sorcerer. But king Uther does not agree to leave everything intact. And Cedric stole a precious stone, in which a sorcerer put his soul, thus he was able to inhabit the body of a boy. Camelot is in danger, but again Merlin is forced to turn to the Great Dragon for help.