Honoka and Takashi, who work at the same workplace, are in an adulterous relationship, secretly seeking each other's bodies, out of sight of others. Both have families and cannot meet freely, but they share the same dream. "Without worrying about time... without worrying about what other people think... we just want to desire each other." To fulfill this desire, they planned an adulterous hot spring trip in the guise of a business trip several months ago. On the day of the trip, the two meet at the station, change from their suits into casual clothes, board the Shinkansen in high spirits, and as soon as they arrive at the inn, they passionately kiss each other...