Eun Kyung introduces her elementary school friend Mi Hee, whom she met after a long time, to her boyfriend Ji Hoon. Mi Hee, who is currently dating a married man, feels attraction to men who are in relationships. One day, they get a chance to be by themselves in the car and she tries to seduce him. He makes her promise that she won't tell Eun Kyung and wants her too. They meet again a few days later and promise to continue meeting up, enjoying their secret affair. She looks at him with pleasure, at the way he's surprised at the phone call from Eun Kyung and is blabbering away an excuse. Ji Hoon completely falls for Mi Hee but she tells him goodbye for the sake of Eun Kyung. Unable to accept this, he goes after her... (Source: HanCinema)