Yukiko, a mother, is worried that her son's grades are dropping. Sensing that her husband's lectures have driven her son to the brink, Yukiko goes to her son's room and gently says, "If there's anything I can do to help you, please let me know." One day, her son wakes up in the middle of the night and witnesses his parents having sex. Since then, he has not been able to forget his mother's lewd appearance. Finally, unable to bear it any longer, he approaches his mother, saying, "Mom, you said you'd help me with anything, right?"