As the director of the Third Business Department, Maria Nagai diligently handles her duties every day. One day, she takes a young male subordinate, a new employee in her department, on a one-night, two-day business trip to the North Kanto branch office. After efficiently wrapping up the day's work, they head to their accommodation at a city hotel near the station, only to find that instead of two single rooms, they have been booked into one twin room for men and women…!
