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.

An unemployed man. The man has no money and ends up staying with his married older brother's house. His sister-in-law feels sorry for him seeing only playing at home. A man who always watches his sister-in-law's thoughts and actions. Then one day, he found out that his sister-in-law was having an affair and cheating on his brother!! He threatens his sister-in-law about what he found out, so she as...

Sexually lustful pizza delivery woman, Seung-ha VS customer who wants to swap, Yoon-yool. The Hye-jin couple, who advocate free sex, point to the pizza delivery man Ji-yeong and Dal-soo as partners to enjoy with them, and execute an erotic operation. When Ji-yeong arrives, Hye-jin's husband shows off his erection, and when Dal-soo arrives, he seduces her with his chest and erotic poses. During the...

Jeong-hee was living with a man due to a de facto marriage. One day, her daughter, Dam-hoi, returned from her study abroad. Dam-hoi always wears leggings. The soon-to-be stepdad, Byeong-min, who is usually a fan of leggings, pays attention to her daughter's clothes. Jeong-hee noticed it, so she also started wearing leggings to distract her young prospective husband.

Joon-yeon and So-hyeon are living together with Joon-yeon's young and pretty mother-in-law for a while after his father-in-law remarries. One day, Joon-yeon is left home alone with his mother-in-law due to So-hyeon and her father-in-law's sudden business trip. The mother-in-law seduces her handsome son-in-law on a hot night. Unable to forget the sex he had with his mother-in-law, Joon-yeon even pl...

Min-goo is troubled seeing her two older sisters, Min-ji and Min-ah, go naked in their daily lives. After much deliberation, he devises a plan to have his friend Byeong-min come into the house. Min-goo proposes a family meeting. He lies to his sisters that he has no time to go because his father's business is not going well and declares that he will bring Byeong-min home. However, her older sister...

Sexually lustful pizza delivery woman, Seung-ha VS customer who wants to swap, Yoon-yool. The Hye-jin couple, who advocate free sex, point to the pizza delivery man Ji-yeong and Dal-soo as partners to enjoy with them, and execute an erotic operation. When Ji-yeong arrives, Hye-jin's husband shows off his erection, and when Dal-soo arrives, he seduces her with his chest and erotic poses. During the...

Jeong-hee was living with a man due to a de facto marriage. One day, her daughter, Dam-hoi, returned from her study abroad. Dam-hoi always wears leggings. The soon-to-be stepdad, Byeong-min, who is usually a fan of leggings, pays attention to her daughter's clothes. Jeong-hee noticed it, so she also started wearing leggings to distract her young prospective husband.

A film depicting the revenge of a couple who are fooled by the physical pleasures of a couple at work.