Once again we focus on Nami Matsushima. This time she has a sister who goes missing and after getting too caught up in doing something about it, our innocent heroine is given a fifteen year sentence for a murder she didn't commit. She's sent to an all women prison where she's not exactly welcome. Her fellow inmates torture, humiliate and try to kill her; but the Scorpion prevails long enough to get some justice.

A nasty schoolgirl does what she pleases, under the protection of her father, who is the school principal. Another girl is not so nasty, but she is determined and tough enough to contest the girl's gang in a democratic vote - and win. That causes her trouble in school, just when her own father, who owns a truck transport company, is murdered in a fake car accident by an American mobster. Before the girl can react, her naive mother has signed over the company to the mobster, and accepted him as her lover. Repentant, the mother starts drinking, and the good schoolgirl ties up with a halfbreed young man, who also has a grudge against Americans. He starts spying on the gangsters, discovers they are dealing in drugs, but is killed before he can report it. The good girl will lead her team in a desperation assault on the mobsters - and the police will eventually arrive just in time for the showdown.

Girl Boss Ruriko and her cellmates escape from a greedy corrupt reform school that's more interested in cheating the government out of money than reformation. Each having their own reasons for escaping, they go their separate ways. With the help of a young mechanic, who's also on the lam, Ruriko tries to realize her dream of leaving the island of Japan behind. But the authorities are always one step behind her...

Released from reform school, the Girl Boss and her girl gang enter into conflict with another girl gang who are allied to the powerful Yakuza Boss.