Shizuka Ashiya, a married woman working at an insurance company, reluctantly agrees to perform a blowjob just once in order to secure a new client. However, the incident soon becomes known to others, and she finds herself surrounded by multiple men. They force her into continuing client entertainment, using photos and videos to blackmail her, and demand she bring in younger female colleagues. Unaware of the consequences, Shizuka ends up passing on the pillow business duties to her naive junior colleague, Ayami. This event drastically alters the course of Shizuka's life.