As the cicadas' cries begin to fade at the end of summer, housewife Keiko (Yuko Shiraki) and her friend Junko find themselves at the home of psychologist Sugiura, listening to a discussion about brain orgasms. Dissatisfied with her bland sex life with her husband, Keiko decides to experience a brain orgasm herself… Without touching her body, Sugiura stimulates her senses, causing Keiko to reach climax and wet her crotch. Blushing, Keiko leaves the scene but cannot forget the pleasure, returning to Sugiura's place the next day...
