A strange portal opens in Princess Peach's new academy. Mario and friends must now master the powers of persona to find their way through a tricky maze and find a supernatural interloper.

People in the Mushroom Kingdom are having the same dream, and then falling into comas soon after. Without any logical explanation, it's up to Felix Toadstien and his team of Persona users to figure out the truth. But how far does this mystery go?