Riho is a married office lady who lives apart from her husband who is working away from home. She keeps her marriage a secret, hoping that Sasagawa, the most hated person in the workplace, won't find out. Sasagawa sexually harasses employees every day, and bullies them with no tact... Riho expresses her displeasure with Sasagawa, but for some reason she feels strangely excited every time he scolds her. One night when Sasagawa asks her to work overtime, Riho happens to see Sasagawa's desk. As if drawn to it, Riho heads over to Sasagawa's desk and indulges in masturbation. By chance, Sasagawa returns to the office and sees her...