An epic unfolds in a strange new land as Mario and Luigi team up for a hilarious, action-packed quest! An evil witch has stolen Princess Peach's voice, replacing her fair speech with explosives! As chaos breaks out in the Mushroom Kingdom, Mario and Luigi head for the castle and meet up with Bowser, who just arrived to kidnap the princess. When they find out what happened, these sworn enemies join forces and follow the witch to a neighboring kingdom. After an aerial ambush crashes their ship and sends Bowser to who-knows-where, Mario and Luigi embark on foot, learning new moves and combining their brotherly might to fight off enemies, as they venture toward the kingdom's castle.