Titre original : The Blue Knight
While preparing for LazyTown‘s upcoming medieval festival, Mayor Meanswell entertains the LazyTown Kids with the story of the famous Blue Knight and his archrival, the Purple Knight.
Robbie Rotten overhears the story and, disguising himself as the Purple Knight, flies a dragon over LazyTown to steal all the SportsCandy in town.
Meanwhile, the Mayor has asked Sportacus to help promote the festival by dressing as the Blue Knight. When the kids have a frightening encounter with the Purple Knight and his dragon, Sportacus, in full Blue Knight regalia, must save the day!