After Professor Kasuga is killed by fiendish aliens for plans to a super-rocketship, his children trek across Japan, protected by the second-oldest brother, Koji, who transforms into the super-cyborg, Silver Mask.

In the summer of 1947, various men and women gather at a mansion in the countryside at the invitation of Kazuma Utagawa. They are artists, novelists, poets, painters, playwrights, actresses, etc. Then the murders begin, one after another. The incident seemed to have no continuity...

Based on the factual case of a young man who broke into a nurses' home in Chicago, mutilating and killing several of the inmates, Wakamatsu's film is a precise, sad delineation of a particular aspect of masculine sexual consciousness.