Minyou and Yeonju have been in love for many years and finally got married. The long time has worn away their passion and love for each other. Although they still maintain a superficial peace, their marriage is obviously dead in name only. Dayin is a good friend of Minyou and Yeonju. Once, she witnessed Yeonju dating another man, which made her and Minyou closer and closer. One is a depressed man, and the other is a kind and innocent woman. As time goes by, Minyou and Dayin finally cross the moral bottom line. After a night of lovemaking, Minyou is shocked because he finds that everything that is happening now has appeared in his dreams. What choice will Minyou make when hesitating between the two women?