A housewife named Keiko spends a lot of time with her son due to her husband's frequent business trips. One day, her son's friend who stayed over to work on a report catches Keiko masturbating. He feigns illness to be alone with her and rapes her. Despite being raped... her body responds to the long-forgotten pleasure, becoming intoxicated by the climax. Her friend's desires spiral out of control, and she is caressed even beside her son, eventually drowning in their affair…
