South Park: Imaginationland

Kyle, Stan and Cartman are chasing a very simple prize: Cartman wants to prove that Kyle saw a leprechaun, and the boys end up on a balloon ride to a land made entirely of imagination. Trey Parker and Matt Stone voice most of the cast, and the place fills up with Strawberry Shortcake, Cinderella and the Tooth Fairy (April Stewart). Then an unimaginable threat arrives, and the boys are the only ones who can get in.