An expedition in the South Pacific lands on a tropical island where the natives worship the mysterious deity Gappa. An earthquake opens up an underground cavern and a baby reptile is discovered inside. The natives warn the foreigners to leave the hatching alone, but they don't listen and take it back to a zoo in Japan. Soon after, moma and papa Gappa start smashing Tokyo looking for their kidnapped child.
Mako and her girl friends enter a dispute with rival street gangsters The Eagles, a band of racist macho pigs led by the evil Baron, who hate half-breeds. When one of the girls start dating a half-breed, they start a terror campaign to take all of them out of town. Mako and her gang fight back, helping their new friend Kazuma find his long gone sister.
A wandering tough biker girl aids a female delinquent gang in their battles against an all-male Seiyu group over a fixed boxing match.
