Mairi and Uchimura, who work in the same office, have an affair despite both having families. They sneak around to meet each other. Both share a common desire: 'Just once, I want to forget everything and indulge in sex.' To fulfill this dream, they planned a business trip as a cover for their affair. On the day of the trip, they met at the station, changed from suits into casual clothes, boarded an express train, and upon arriving at a secluded inn, immediately started kissing passionately...
