"While preparing for LazyTown’s medieval festival, Mayor Meanswell tells the LazyTown children the story of the famous Blue Knight and his rival, the Purple Knight. Robbie Rotten overhears the story and, disguising himself as the Purple Knight, gets himself a dragon and plots to steal all the SportsCandy in town."
Stephanie sings Bing Bang at the end, but she doesn't sing the whole song, she cuts it off because of Bessie Busybody taking over and singing her song too.
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