Tough girl biker Ako (pop singer Akiko Wada) comes across Mei (Meiko Kaji) and her girl gang (the Alleycats/Stray Cats) as they are about to have a knife fight in Shinjuku, Tokyo with another gang of girls. When the second gang calls in their boyfriends for help, Ako joins in and turns the tide for Mei and her gang and becomes a leader figure for the girls. Meanwhile, Mei’s boyfriend Michio (Koji Wada) wants to join some right-wing nationalists, the Seiyu Group. To prove himself, he induces an old friend Kelly (Ken Sanders) to throw a boxing match so the Seiyu Group can cash in betting against him. But when the boxer, encouraged by Ako and Mei, wins the fight, the Seiyu Group takes their anger out on Michio until Mei and the Alleycats rescue him. But Mei and the girls are now on the run from the powerful group. Mei is eventually killed and Ako leaves Shinjuku, roaring away on her bike.
Delinquent girl boss meets and conflicts with an orphan girl who lives an isolated life after the dramatic deaths of her parents. She plays the piano, but stands up against her lecherous guardian, who is also a school official.
A wife of a small Osaka family risks her life to protect her husband’s family and its members against much larger, more established organizations. The odds are stacked against her and her family. She even follows the yakuza way to the lette but the other organizations tries to use that against her.
Ambitious yakuza Kenji befriends harmonica-playing bartender Chuji, who moonlights as a part-time drug-dealer for the opposing gang. Their friendship is threatened by Kenji’s plans for advancement, as well as by his bodyguard’s growing jealousy of Chuji.