Set after Luigi's Mansion. One night, Princess Peach senses a voice calling out to her, and walks out of the Mushroom Kingdom and into the Warp Pipe at the abandoned Ghost House. Mario, Luigi, Princess Daisy, Toad and Toadette find out from Lumalee that the pipe she went into leads to an entirely different universe set in outer space, and Peach is trying to find out which planet she and Daisy came from. However, an evil alien overlord named Tatanga is currently in the middle of attacking this universe, and teleports the entire Mushroom Kingdom into the void of space in the Space World. Teamed with Bowser and his army, Mario and his friends must stop Bowser and Tatanga, find Peach, and make their way to the center of the Space World before Bowser uses Tatanga's technology to reshape the universe in his image!
