A young girl acquires the ability to become a super-powered alien pig. Not too pleased with being a pig, she has to become a super-powered girl by fighting crime and rescuing people.

A young schoolgirl, Karin Kokubu, comes across a starving pig and feeds it an apple. The pig is in fact an alien being and a prince, and in gratitude he gifts Karin the ability to wield superpowers... as a pig. Karin is pleased at getting superpowers but is upset that she has to use them as a pig, but the prince explains if she can use her powers for good, she will collect a number of pearls, and with enough pearls she will earn the right to fight powers as her human form. Thus begins Karin's superhero life as the Pig Girl, Tonde Buurin.—Q. Leo Rahman