Hattori Maika is an employee working at hotel "Bird Left". She has a secret relationship with her colleague Matobe Narimitsu. One day, Maika witnesses Narimitsu having an affair with another woman in the company and is dumped by him. In the midst of her heartbreak, Maika is approached by Satori Shun, the newly appointed CEO of "Bird Left", who tells her that he will help to take revenge on her boyfriend if she pretends to be his girlfriend. Shun has a planned marriage set by his parents and he wants to get away from it. The two with their interests aligned, decide to start a fake relationship to help each other.