Shotaro is a salesman for a men's underwear sales company. He has always had a desire to get promoted, but the reality is harsh. In fact, Shotaro's job was to lend out his room to his boss and other high-ranking business partners for their gay affairs, and to serve as an "alibi witness" to their wives for their affairs. On this day as well, Manager Shibata and his business partner, President Miyajima, occupy Shotaro's room and are in the middle of having sex. Supported by Shibata's words, "I'll recommend his promotion to section chief," Shotaro spends the night on a bench in the park, but...

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...

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.

Amon, who runs a private investigation agency, receives a request from his ex-girlfriend Kumi to investigate her husband's infidelity. Kumi's husband is Amon's best friend, detective Kagawa. As the investigation progresses, the surprising truth surrounding a vicious fraud case comes to light...