Mario, Princess Peach and her subjects decide to take a relaxing vacation in the Island Kingdom, Isle Delfino. But upon arrival, Mario is accused of vandalism and life endangerment. Believed to be the cause of swirling paint-like substance that can sink islanders to the bottom or create goop monsters. To clear his name and restore the island, Mario must use a special water pump designed by a strange old man in a white coat, and find his doppelgangers behind these artistic crimes.
