Aki is a married woman whose marriage has been cold for three years. Her husband goes out drinking every day and never comes home, and the gap between her and Aki only grows wider. One day while drinking, Aki's bad friend says he will cheat on her and make her break up, and later, with her husband's approval, he cuckolds her. When her husband returns home and sees the hidden camera footage, he regrets it and decides to repair his relationship with Aki. However, having been cuckolded once, Aki gets a taste of another man's dick and ends up continuing his affair with his bad friend...