Reiko is sexually frustrated because her husband Hiroaki is obsessed with an idol that looks exactly like her and always calls her by the idol’s name during sex. One night, Hiroaki brings his old high school friend Taniguchi home for a housewarming party. After Hiroaki passes out drunk, Taniguchi makes a move on Reiko. Though she initially resists, she gives in and they have intense sex right next to her sleeping husband