Taro's mother, Kanae, always exudes an unconcealable seductive pheromone. Drawn by Kanae's sex appeal, Ikeda, who often visits Taro's house as a classmate, witnesses Kanae masturbating one day. The hot-blooded young man's reason begins to go haywire as he sees the lewd side of a woman for the first time... Kanae is swept away by Ikeda's momentum as he attacks, driven by his own instincts, and accepts the immoral relationship as a one-time thing. However, Ikeda's desires go even further when he gets a taste of Kanae, who he has always admired. And Kanae herself soon becomes intoxicated by the taste of the young swallow and falls into the grip of pleasure...