Raizo Fuwa is a 25-year-old salaryman residing in a cramped apartment and working in a crowded Tokyo office. His hopes for better conditions are dashed when the new office building his company is scheduled to move into is condemned as unsafe due to the construction company cutting corners. Since the old building is already being demolished, they have no choice but to "temporarily" relocate the office into Fuwa's new flat. The final complication arrives in the form of new employee Izumi Hiyama, a high school dropout the boss has promised to look after as a favor to her family. With no landlords willing to rent to a 15-year-old girl, she too must move into Fuwa's home/office.