Female Employees: 2-on-2 Swapping

Sisters Ji-soo and Ji-yeong decided to sell their used underwear due to financial difficulties. Perverted men offer to buy them at a higher price by asking these two sisters for shots of them wearing the underwear. Other men offer to pay even higher prices by demanding sex out of greater desire. As the sisters earn more money than expected, their service becomes more and more popular.

Min-joon and Eun-seo are newlyweds who have been married for a month. Min-joon's younger brother suddenly returns from the United States and comes to live with the couple. Eun-seo falls in love with her handsome, muscular brother-in-law, so much so that she secretly masturbates and cannot sleep at night because of her desire to have her brother-in-law.

Yoo-ra succeeded in finding a job after a difficult time. Despite her stunning beauty, her family's financial situation is difficult. Her male assistant manager knows of her difficult situation, so he asks for her body with money as bait. On the other hand, Hye-seon, the female manager of the same company, seduces the handsome new employee, Min-soo. Employees enjoy the world of animals in the workplace without knowing each other.