An intense erotic work depicting the confrontation between a female investigator and a sadist.

A young, passionate police officer, Kamiyoshi, who was ordered to be the "Banquet Manager" of the prefectural police, has his second bag, which contains receipts that are evidence of police corruption, stolen by a perverted woman, Lisa, on a crowded train. However, Lisa also has her prey stolen by a rival female pickpocket, Mari...

Sonezaki, an elderly man, sees a beautiful woman named Eri on the train. When he saves her from a groper, the stone on her bracelet glows and she suddenly transforms into a slut. This leads Sonezaki to start living with Eri.

Maki is a slutty molester investigator working undercover alongside her senior, Tokiko. Yet behind the scenes, in order to avenge her lover—Detective Yaguchi—she uses her sexual wits to seduce and systematically subject each member of a vicious rape gang to a brutal bloodbath. When she finally comes into contact with her last target, she uncovers an unexpected truth behind the case...