A newly engaged couple finds the home of their dreams and it quickly becomes a nightmare when the previous owner's friend continues squatting in their guest house. It leads to a turf war that ultimately ruins their house, their marriage and their lives.

Gyeong-tae, the husband who is tired of sleeping with his wife, posts that he is selling his wife on a second-hand website. After reading the article, Young-sik accepts the transaction and sleeps with Gyeong-tae's wife. Gyeong-tae, who is secretly watching, gets excited when he sees his wife having sex with another man.