Responding to a request to film sex with his wife, a man is approached by the organizer of a swinging club and asked to stage a cuckolding scenario. Reunited with Kana, who returns after a six-month absence, the husband feels a new thrill. As he watches another man take his wife, the married woman, bound and tormented with toys at her husband's own suggestion, finds herself overwhelmed with conflicting emotions. Then, another club member joins in, and the wife is taken by three men at once, climaxing repeatedly. The husband can clearly see just how passionately aroused his wife has become.