While her husband is away, Maki is suddenly assaulted and raped by her stepson Yoshio, who records the entire act. Blackmailed with the footage, she is forced into a life as a sex slave. One after another, she is humiliated by Yoshio and his friends, dressed in increasingly provocative outfits and tormented by the young men. Despite her resistance, her body betrays her with intense arousal, gradually consumed by overwhelming desire.