Hyun-dae and Min-ju have been sex partners for over two years. One day, without remorse or any feelings, Hyun-dae tells Min-ju that he is getting married. Min-ju callously leaves him but Hyun-dae has trouble getting over Min-ju and reminisces of their sexual encounters even when he is with his wife. Despite this, Hyun-dae is still very popular with the woman surrounding him: a married woman who takes his course at the academy, a college friend, a curator... All of them can't forget the night they spent with Hyun-dae. Min-ju on the other hand moves in with Hoon after breaking up with Hyun-dae. She is angry at Chul-soo, who promised that he will divorce his wife and start things up with her six years ago. Min-ju also thinks about Hyun-dae from time to time. What do these people really want in life?