 Mario decides to throw a party and invites Luigi, Princess Peach, Yoshi, DK, and Wario. Then they all start to argue who among them is the superstar. Toad, who starts to go ballistic about this, suggests they should go on an adventure at 6 different worlds to compete and find out who would be the superstar. They start for the wrap pipe to start their adventure, unaware of the dangers and mystery at hand.