Mahiro, a newly graduated office lady, goes on her first business trip with her boss. When the two of them finish work and head to their lodging, they find that only one room has been reserved at the inn. This was deliberately arranged so that Mahiro could stay in the same room as her boss... She is swept away and addicted to the temptation of her subordinate who acts pure and innocent... A one-night forbidden love that transcends the age difference and hierarchical relationship.