At Echina Academy, a former all-girls school turned co-ed, a special policy is implemented to reduce sexual desire among male students to prevent disturbances. As the only boy on campus, Izumi is targeted by Sakurai, a member of the Disciplinary Committee, who takes it upon herself to "relieve" him as part of her official duties. Their professional arrangement quickly spirals into an intense, clandestine affair, only for another senior member of the committee to take an interest in Izumi's needs.
While Sakurai is recovering from a fever, Izumi is cornered by Kitamura Chika, the tennis captain and a fellow member of the discipline committee, who witnessed his secret activities. After Chika seduces him, the two are eventually joined by a recovered Sakurai, leading to an exhaustive three-way encounter that pushes Izumi to his absolute limits.