Private Detective Ippei Shizuno faces off against a serial killer and a wealthy woman's society who runs an illegal gun trade.

In the backstreets of Ginza, the boss of a hairdressing salon is found dead, killed by strangulation. The detective on the case soon hears rumors about the murder.

Roppeita is big in size, clumsy and full of energy. When his grandfather orders him to move out to Tokyo to save a sinking milk delivery business a distant relative of his runs, he encounters the most strangest of clientele.

Ruriko's father is a well known scientist who's involved in secret research that even his family doesn't know about. Ever since he moved up to the research laboratory in Hokkaido, Ruriko hasn't heard from him. The only thing that reminded her of his warmth was the green music box that he’d left behind for her. She longed to reunite with her father. The little box played music that lifted her spirits, to a place where everything was perfect.

This is the sixth film in the series. There were seventeen Wolves of the City films between 1968 & 1974, in the main aimed at shock-value & “pinku” soft-core with sex, nudity, violence, gunplay, & a lot of mainly pointless foolishness when the biker gang coopts racist or nazi imagery, inventing a non-existent youth culture void of morality…