Kota, a college student, becomes obsessed with masturbating to fantasies of Hisae, a married woman he works with at the same family restaurant. One day, after closing, the two end up alone in the restaurant under the pretense of cleaning, and Kota's pent-up desire erupts as he pins Hisae down. Recently deprived of sex with her husband and suffering from sexual frustration, Hisae finds herself drawn to the youthful and passionate Kota. Their secret encounters continue during work shifts, with Kota's actions growing increasingly bold, deepening their illicit relationship.