After Yuuki's husband, Ryoichi, is promoted to section chief, his coworker Uemura recalls his past feelings for Yuuki. However, those emotions remained unfulfilled, and once again he has missed a chance for promotion. Consumed by jealousy, Uemura secretly teams up with cleaning staff member Miyata. Together, they unleash his pent-up rage and desire for revenge, driving pleasure to its ultimate extreme.