Nishimura, an insurance salesman, is a masochist woman. However, as her sales performance declined, stress and pressure began to weigh on her. At that time, her boss and husband at the company, Kashiwagi, suddenly bids her farewell. Nishimura, whose masochistic sexual desire cannot be subdued, visits the man he dated during his student days, the man who first made Nishimura his slave. She tells him that she is being trained for the first time in a while