Riho is a married office worker living apart from her husband while he is stationed away, and she keeps her marriage secret from Sasagawa, the department manager everyone hates. His daily sexual harassment and bullying disgust her, yet every time he scolds her she becomes strangely aroused. One night, after he forces more overtime on her, she is drawn to his desk and begins masturbating there. Sasagawa unexpectedly returns to the office and catches her in the act, giving him the opening to turn her into his hypersensitive masochistic pet, conquered into complete submission by pleasure.