After years of apparent good will, Mario and Donkey Kong are at it again -- this time on Game Boy Advance! Donkey Kong has stolen all of the Mini-Mario toys from the Mario Toy Co., and now it's up to Mario to hunt down his long-time nemesis and retrieve the pilfered goods. He'll have to race through confounding levels, finding keys and releasing Mini Marios, before time runs out. Along the way he'll master new moves in order to scale the puzzling heights of six action-packed worlds!