One day, Takeshi, the son of her husband's brother (her husband's nephew), comes to live with Miho as a guest because he is preparing for university entrance exams. While living together, Miho becomes attracted to the young Takeshi. She has been dissatisfied with the lack of marital relations with her husband and, over time, her desire to be 'taken' grows stronger each day. Secretly from her husband, she tempts her nephew, who is about to take his exams, and ends up having a relationship with him. The destination of Miho, who repeatedly engages in secret sexual encounters, is...