BOWSER JR. KIDNAPS PRINCESS ROSALINA TO DRAIN HER COSMIC POWERS AND FUEL A UNIVERSE-DESTROYING CANNON TO FREE HIS IMPRISONED FATHER, BOWSER. MARIO, LUIGI, PRINCESS PEACH, TOAD, AND A DINO PAL NAMED YOSHI VENTURE INTO OUTER SPACE, EXPLORE COSMIC WORLDS, AND NAVIGATE GALACTIC CHALLENGES TO RESCUE HER AND SAVE THE UNIVERSE