Mario ventures out to an abandoned home that's been close to the Mushroom Kingdom for over a century. People have gone inside it before, but none have returned. Princess Peach was also supposed to come along for the ride to investigate, but Mario left her behind for her own safety. Soon after making it inside, the plumber comes across a quaint little music box that was playing by itself. Little did he know, the "harmless" music box would trap him inside the house and set off a series of events