Umi and Keisuke, who work at the same workplace, secretly engage in an affair. Both have families and cannot meet freely, but they share a common dream: 'Just once, I want to forget everything and spend from morning till night having sex.' To fulfill this desire, three months ago they planned a business trip as a cover for their affair. On the day of, the two meet at the station, change from suits into casual clothes, and confidently board the Shinkansen... As soon as they arrive at the hotel, they immediately devour each other...
