New employee Reina is anxious about an upcoming business trip with her tactless department chief, venting to her boyfriend who always listens kindly but leaves her somewhat unsatisfied in bed. On the day of the trip, a trainee suddenly cancels, leaving Reina alone with the chief. Overwhelmed by the exhausting hospitality duties and forced to down drinks, she reaches her limit when a client's president sexually harasses her, causing her to snap and shout in anger. The deal falls through, and due to a hotel mix-up, she's forced to spend the night in the same room with the chief she despises. In this tense situation, Reina's emotions begin to unravel completely.