Ichika left the company she worked for three years ago, but returns to work in the same company when her husband loses his job. - Shimokawa, who used to be Ichika's subordinate, becomes Ichika's boss three years later, and their positions are reversed. - Shimokawa is excited and plans to take advantage of her boss's position to have Ichika, who she loved until she leaves the company, accompany her on a business trip and have sex with her at the hotel where she is staying, and as soon as she returns to work, she decides to have sex for her husband. - Ichika, who doesn't want to lose her job, ends up getting her black pantyhose wet from the vile, intense sexual intercourse that takes place behind closed doors...