A nurse starts to investigate why a woman who came to her office committed suicide. She discovers that a Yakuza gang is using an unusual drug to sexually enslave women. But she gets caught and when she is injected with the drug rather gruesome side effects appear, much to the surprise of the gang.
A female teacher spots one of her students being molested by a vagrant. But her rescue attempt fails as the vagrant drags the teacher into an empty classroom and sexually assaults her. The student finds a school employee, a piano tuner, to try and help but all they can offer is some comfort. Later the piano tuner invites the teacher to his house. He wants her to be his obedient loving bride and has built a nice caged apartment in his basement all for her. He subjects her to an endless series of sexual humiliations to persuade her to say yes.
A policeman is murdered and his gun, stolen, used to commit the next crime. Detective Kashiwagi, who is leading the investigation, learns that the author of the killings "walks like a dead man".
