Eriko, a housewife who teaches the neighborhood student Toshio, discovers one day that Toshio is inexperienced with women. Recently feeling a distance with her husband, Eriko, driven by curiosity, decides to teach Toshio about women. She becomes unable to resist the pleasure of molding the innocent, younger virgin in her own way, and she finds herself getting deeper into the situation. However, her jealous husband, Yasunori, notices her change and secretly installs a camera. Unaware of this, Eriko continues to bring Toshio to her house under the guise of studying...