Office worker Mayu Sakashita has been manipulated by the man she believed was her boyfriend into joining a pyramid scheme, leaving her burdened with debts to a loan shark. One day, Kinji, the head of the underground lending operation, gives her an unusual assignment: track down Chihiro, a woman who disappeared after borrowing a large sum of money and is said to be hiding while working at an unlicensed escort service. Kinji offers Mayu a deal - if she becomes one of his subordinates and goes undercover, risking her own body to infiltrate the operation, he will wipe out her debt. Desperate and seeing no other way out, Mayu eagerly accepts the offer...

A strangled corpse of Miss SM Hotetor was found at a love hotel. Nozawa, a detective who investigates the case, is fascinated by the mysterious beauty Lisa who appears on the investigation line.

Yamaguchi Maki felt bored with her husband Koichi's linear, monotonous movements, but she moaned and shook her hips, trying to reach a deeper state of ecstasy. The two had only been married six months...This was the second time Yamaguchi Ryo had met his brother's wife since attending their wedding. Having failed his university entrance exams, Ryo had moved from the Kyushu countryside to attend a cram school in Tokyo, and was now staying with his eldest son, Koichi.