Reiko, a teacher at a high school in Tokyo, is in her 30s and in the prime of her career. Although she married young, she was not blessed with a child and was dissatisfied with the sexual rut with her husband. Reiko has a secret that she cannot tell anyone. That is... His students, who are in the midst of adolescence and have an abnormal admiration and ideal for older women, are skillfully guided into having physical relations with each other in secret.