A secret 2-on-2 group sex between young, sexy female college students and the pension owners. "I'll pay you back with my body instead of money!"

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.

MZ-generation sisters Hee-jeong and Eun-jeong use an app to find a personal PT teacher to help them lose weight. Both sisters fall in love with their teacher, Ji-hoon, at first sight. The two sisters compete with each other to seduce Ji-hoon to take over.

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.