Three friends (Yeon-soo, Hyun-kyung, and Jung-min) meet at a cafe. Yeon-su confides to the two about her love affair with Seung-wook. Seung-wook, who had been dating for several months, suddenly announced that they had broken up, and although he was suffering from Seung-wook's change of mind that he couldn't understand, he decided to accept it. Jung-min is very confused. Because she knows that Jung-min is dating Seung-wook, and that the relationship between the two has grown apart. A few days later, Yeon-soo and Hyeon-gyeong witness Jeong-min and Seung-wook walking arm in arm on the street.