Ayumi, a mother who is relieved that her daughter, Mika, who was raised by a single woman, is married. She tries to start her new life saying, "This time it's my happiness," but ends up breaking up with her dating partner... At that time, a daughter couple who are building a detached house decided to stay for a while. Her disappointment Ayumi feels a man in her son-in-law, Hideki, who is her opponent, and remembers the throbbing of her uterus. On the other hand, Hideki, who was attracted to Ayumi's charm that her wife didn't have, couldn't control her emotions.
