The father remarried with a younger former subordinate, Shinako, who suddenly came into the house as Yusuke's stepmother. The son, Yusuke, couldn't accept such a young Shinako as his stepmother. One day, while boasting to a visiting friend that Shinako had come to the house for money, Yusuke accidentally rapes her. After that, Yusuke becomes aware of Shinako and even peeks into his father's bedroom with her. However, noticing his gaze, Shinako looks at Yusuke and starts to feel…
