Yu and Kenichi, who work at the same workplace, have an affair with each other, always looking for opportunities to be physically satisfied with each other. they have the same wish and dream but because they both have families they cannot freely meet each other. They want to forget everything to be satisfied together for once. To fulfill that wish, an adulterous trip called a business trip was planned several months ago. And on the day, the two met at the station, changed from suits to casual clothes and happily boarded the Shinkansen train to the motel and fucked each other fiercely.