At the mailbox, Mario and Luigi receive a letter from Bowser. The letter tells them that Bowser has kidnapped Peach yet again and the two brothers must return to the Mushroom Kingdom to rescue her. However, they ignore his request and dash off to get some super mushrooms. While they are doing this, they are confronted by Wario who was sent by Bowser to bring them back to the Mushroom Kingdom. Mario explains to Wario they need a vacation and do not want to save the Princess anymore and tells Wario to go and tell Bowser that he and Luigi aren't coming. Wario swears to bring them back at all costs, but they make a break for it before he can. Then Mario and Luigi decide to race go-karts.