The pink puffball's second outing on the Game Boy Advance, Kirby and The Amazing Mirror shifts from the standard linear platformer norm to a sprawling Metroidvania game with optional cooperative multiplayer. The story begins with the Mirror World being taken over by Dark Mind, and Meta Knight going in to try and stop it. Meanwhile, as Kirby is walking he is attacked by a dark copy of Meta Knight from the Mirror World and split into four Kirbys of different colors. The four board a warp star and chase Dark Meta Knight into the Mirror World.