Five years into her marriage, Shiori finds her relationship with her husband has lost its passion. Whenever she desires intimacy, he ignores her needs and satisfies his own sexual urges through masturbation. When he makes a serious mistake at work and faces the threat of being fired, he is asked to entertain the company president as a condition for keeping his job. Against her will, Shiori performs a blowjob for the president. The sensation of a real cock excites her, reigniting long-dormant desires that gradually turn into pleasure. The next day, the president returns—her husband's job is safe, but now he demands full sex. Though conflicted, Shiori's body betrays her, craving the cock, and she ends up allowing creampie sex. Overcome by guilt and arousal, succumbing to her desires and pleasure, the married woman transforms into a submissive, lustful female.