Fed up with his wife's lack of interest, Ippei signs up for a matchmaking app for married men. Though he feels a little guilty, he ends up meeting Maki, a married woman with the same problem. The two share a common love of coffee, and gradually become close. Maki hesitates, but suggests a hotel, and Ippei persuades her to go at her own pace. Attracted by Ippei's sincere attitude, Maki invites him to her house a few days later, and, teasing him slowly like coffee, they indulge in an affair...