Moko Sakura is a clumsy new employee at a trading company in Tokyo, constantly making mistakes due to her naturally accident-prone nature. Despite her frequent blunders, her cute appearance makes her popular in the office, and her errors have always been overlooked—until one day she incurs the fury of a client, resulting in her demotion. What makes the situation especially painful for Moko is that her despised superior, Nakata, is also transferred along with her under the principle that "a subordinate's failure is the responsibility of the supervisor." In the new department, she is forced to work overtime until morning in a private office with only her boss. Subjected to psychological pressure and lust-driven power harassment, Moko is pushed to her limits and must find a way to protect herself while trapped in this oppressive environment.