After an affair, Ryozou and Chikako reunited despite having once separated. Though they no longer had sex due to Ryozou's age, they lived contented days. One day, Ryozou's son Yohei returned from studying abroad in France. He suspected that his mother's illness was Chikako's fault. Amidst the tense atmosphere, tragedy struck while Ryozou was out… Unaware that her husband was watching, she climaxed repeatedly with a young cock! The son who rapes his stepmother, the stepmother who can't resist taboo pleasure, and the father who secretly watches…
