Story Mode Plot
X-PO sends Andy and his friends to the Mushroom Kingdom to find Mario. However, they encounter Toadsworth, who tells them that Mario, Luigi, and Princess Peach are captured by Bowser and told them that a war in the kingdom is currently ongoing. Toadsworth tells the heroes that they must rescue the princess and defeat Bowser to end the war in the Mushroom Kingdom. Andy frees Princess Peach while his father and Hugo free Mario and Luigi before going up against Bowser. After their battle, Bowser gets sucked into a rift, causing Mario and Luigi to jump in to go after him. Princess Peach gives Andy a kiss on the cheek before he leaves with his friends.