Kana and Nishijima, who work in the same office, have an affair relationship in which they seek each other's bodies closely while avoiding the public eye. The two, who have families and cannot meet freely, had the same desire. "I want to forget everything at once and spend all my time in SEX." In order to make such a dream come true, an affair trip called a business trip planned from three months ago. Then, on the day of the meeting, the two met at the station, changed from suits to plain clothes, boarded the limited express train, and as soon as they arrived at the inn, they scrambled for their lips.