Ako (Wada) is a drifter who picks up Mei (Meiko Kaji - later to play the eponymous Lady Snowblood (1973)), who is caught up in a beef with a rival girl gang.A fight ensues, and Ako chases away the gang and the various yakuza that have gathered for the entertainment.Anchored by a performance of undeniable presence by Akiko Wada, who plays a no- nonsense biker and who surprisingly didn't appear in any of the sequels, the film gets bogged down by a plodding series of events and set-pieces that are too free-spirited for it's own good, and lingers far too long on various pop performances from flavour-of-the-week bands.Plot-wise, the film doesn't have much going for it.
Two Japanese men help a Vietnam war deserter escape from Japan for Sweden. After word of the drug deal gets spread around they find themselves fending off rival gangs.
It becomes apparent that Mei's boyfriend Michio (Koji Wada) is caught up in a plot with the Seiyu Group, a powerful Yakuza organisation, to throw a boxing match.
Naturally, things don't go quite to plan and Michio is hunted by the Seiyu Group, but not if Ako has anything to say about it.
Mei is eventually killed and Ako leaves Shinjuku, roaring away on her bike.
In the first of what would become a successful five-film series, Stray Cat Rock: Delinquent Girl Boss is a passable and sporadically entertaining introduction to the 'girl gang' genre and one of the key entries in a series of films known as 'pinky violence'.