Mayu's husband suffers from ED and is unable to have sex. She, being highly sensual, grows increasingly frustrated. One day, the neighbor visits, and upon learning of her husband's ED, he drugs Mayu and seduces her. Liberated physically, she becomes deeply involved in the affair, satisfying her desires. Suspecting something amiss with his wife, the husband secretly records her behavior. Witnessing the affair, the husband's impotence miraculously heals.
