Framed as a mystery in which a detective is hired to locate a model's rapist, every element of the film, from its alienated characters and artificial settings to its gratuitous sexual cruelty and cynical "twist" ending, mark it as just another of the hundreds of perverse Japanese attempts to sexualize the Italian gialli of the 1970s into even more Sadean exploitation than their models.
A rape incident has occurred. The victim was a woman named Yumiko Kawamura (Keiko Kaga), a dental hygienist. However, the statements of the victim Yumiko and the suspect Saburo Kubo were completely incompatible. Adachi, a national lawyer who took on the defense of the suspect, will begin a personal investigation of Yumiko to find out the truth of the case.