Rika is released from girls detention school and then winds up at a lounge bar where she finds her other classmates working. This lounge bar is run by Junko Miyazono.

Reiko Oshida stars as a young wannabe gangster tough girl, just released from reform school. She tracks down one of her classmates fathers, who runs an auto repair shop that the local Yakuza are trying to force out of business and take over, and starts working for him. At the same time a recently released from prison, and now ill Yakuza is trying to make a new life for himself and his girl, a friend of Reiko's, who also just graduated from reform school. A fateful car crash brings the two on a collision course with each other and the brutal Yakuza clan, which can only end bloody vengeance.

After helping a pregnant girl escape from their reform school and facing the resulting punishment, a clique of delinquent girls eventually reunites a year later in Tokyo to face different challenges in the form of yakuza and… street vendors.

The local yakuza gangs dominating the port of Yokohama do not take well the invasion of their territory by a daring biker gang, led by a girl in black leather outfit and cowboy hat - reminiscent of the earlier war victors. Old and new grudges lead the two girl gangs to clash in several fights. However, when one of the leaders dies, the girls end up by uniting against the male gangsters that had been using them as puppets - and it all ends in a great finale mixed battle by the seashore.