Desc: Xi Trum Va Cay Sao Than: Directed by Peyo. With Georges Atlas, Jacques Balutin, Angelo Bardi, Jacques Ciron. A villain named McCreep steals the Smurfs' magic flute, an instrument that makes people dance wildly, and uses it to rob them. The Smurf King sends out Peewit to track down the thief and retrieve the flute.