Diligent and hardworking manager Rin Okae scolds her subordinates for their mistakes but works overtime with them to finish tasks. Today, she has to take the last train home, and her husband is already asleep, so she can't get his attention. She calls her married lover, the executive director, for phone sex to satisfy herself. One day, while her subordinate is out for lunch, she has an affair with the executive director in the office. However, her subordinate secretly records it. The subordinate shows the evidence to Rin Okae and makes her give him a blowjob. After that, the subordinate's demands continue...