Six months into their marriage, Miho finds herself depressed as her husband, Koji, becomes increasingly busy after his promotion and starts neglecting her. One day, Koji's boss—also Miho's former supervisor—Hoshino, suddenly visits. Confessing his long-standing attraction to her, he draws her toward a new kind of pleasure her husband can't provide. Though initially resisting his aggressive advances, Miho gradually succumbs, overwhelmed by an intense and deep satisfaction.