A father invites the popular and talented Fumie to be his private tutor for his son who has lost motivation after failing the university entrance exam. However, the son is oblivious to his father's feelings and spends his time lazily, not putting any effort into his studies. Fumie wonders how to get him motivated again, and comes up with a way to take advantage of her son's sexual desire, which is growing in contrast to his desire to study. When she shows her ripe body to her son, who still can't concentrate in class...