A leaping plumber named Mario from a magical kingdom filled with mushroom people and rolling hills and floating blocks becomes human in modern-day Boston, and gains a big belly. Struggling with his new body, he drags his friends Peach, Luigi and Toad into the real world as well. They have an adventure that consists of several misplaced, out of pocket subplots, including one that pits them against an elderly, bearded old lizard with a dad bod, named Bowser. Feature adaptation of the fan fiction of the 1992 unlicensed 2 season miniseries based on the licensed 3 season miniseries based on the popular video game series