At a quiet inn's cypress bath, the beautiful and mature wife, Ishizawa Riko, seeks emotional healing. Married seven years ago after a five-year relationship with her husband, who is three years her senior, she now lives with him and their daughter, who recently entered high school. Though others see them as an "ordinary couple," that perception may have been nothing more than her own self-justification. The moment she arrived at the inn, she voiced suspicions about her husband's infidelity, harboring resentment that quickly shifted toward a man she had just met that morning. She actively pursued pleasure, greedily craving his manhood, gradually losing control, succumbing to wild passion and burning desire.