Mario and Luigi embark on the adventure of their dreams in a hilarious action RPG that combines the resort world of Pi'illo Island with the wild landscapes of Luigi's imagination, where anything can happen.
Meet a host of hilarious characters as you strive to rescue Princess Peach and help Prince Dreambert free his petrified Pi'illo people from the bat-king Antasma's curse.
Opening with a sightseeing trip for Princess Peach, along with her entourage and Mario and Luigi, the story follows the events that follow Dr. Snoozemore's mysterious invite to Pi'illo Island.
All seems to be well at first, with the doctor extending an absent but hospitable welcome to his island, until things take a turn for the worse.
Princess Peach is snatched and dragged into a strange Dream World by the ghostly bat king Antasma.
This new and enigmatic foe needs to be stopped, so Mario decides he must rescue Princess Peach by entering the Dream World - through the sleeping consciousness of his brother.