When junior-high student Karin stumbles upon what she believes to be an injured piglet, little does she know that it's no ordinary swine. This piglet, actually a prince named Tonrariano III hailing from the planet Booringo, was simply famished. Grateful for Karin's apple that nursed him back to health, Tonrariano bestows upon her an unexpected gift - super pig powers. However, Karin's dreams of resembling the graceful superheroine 'Cutey Chao' are dashed as she transforms into 'Super Pig' instead. Reluctant at first, Karin's perspective shifts when she learns that by performing good deeds and collecting 108 pearls, she can morph into someone akin to 'Cutey Chao'. Intrigued by this possibility, Karin embarks on a journey of self-discovery and heroism as Super Pig.