When two Girl Bosses fight each other over territory, their enmity is difficult to solve - they are equals in looks, strength, determination, and power of their respective girl gangs. So, the way is open to a mischievous Yakuza Boss who invites them for a peaceful way to decide their feud: a sexual challenge for him to decide who is the better Girl Boss. Trapped, both are subject to the man's lust and sadistic assaults. They escape by joining forces against the yakuza gang, though it costs one of the young women her life - when she was friends already with her former enemy.

Reiko Ike stars as the daughter of a man who has been pushed into drug dealing by the local Yakuza mob. Having outlived his usefulness to the gang he is murdered and Reiko is gang raped, leading her to attempt a knife attack on the Yakuza boss (Ryoji Hayama) at a swank nightclub. Failing to kill him she ends up in prison, where she befriends a crew of other malcontents (including Yumiko Katayama and Chiyoko Kazama) and meets the Yakuza boss's girlfriend (Miki Sugimoto). Upon release Reiko reassembles her mob and launches a Machiavellian scheme to engineer a gang war between Hayama's Oba Industries and the formerly dominant Hamayasu Clan. The rival gangs begin killing each other off and Reiko works her way closer to her ultimate vengeance.