Shun Nakayama

When Naoko was a freshman in high school she was kidnapped and imprisoned by a man who lived next door. For one month, she went through hell. Finally, she killed the man and escaped. Now as an adult, Naoko is a doctor specializing in infertility treatment, but she also has another side. Naoko is a popular master in a S&M club.

The beautiful Shizuko and her husband Toyama Takayoshi have a loving relationship, But Takayoshi is getting older and isn't always able to perform. His primary source of gratification involves observing his wife in sadomasochistic scenarios so he commissions a painter, skilled in the arts of bondage to bring these fantasies to life. Soon, Shiziko becomes a willing and submissive participant in fulfilling the S&M fantasies of not only her husband but a slew of rich lecherous men.

A wave of gruesome murders is sweeping Tokyo. The only connection is a bloody X carved into the neck of each of the victims. In each case, the murderer is found near the victim and remembers nothing of the crime. Detective Takabe and psychologist Sakuma are called in to figure out the connection, but their investigation goes nowhere...