Years pass, and both girls arrive in Seoul to start their adult lives. However, they get separated. Yeon-soo finds a job working at Victory Records in hopes of one day meeting Se-na again and becomes involved in the lives of the stepbrothers, Min-chul and Sun-jae. Yeon-soo and Min-chul make a deal that they will help each other's siblings. Yeon-soo moves into Min-chul's family home as a tutor for his younger sister Min-ji (Shin Min-a), and Min-chul will help Se-na achieve her dream of becoming a singer. A complex drama unfolds, Min-chul and Sun-jae both fall for Yeon-soo. Yeon-soo chooses Min-chul, but their love is threatened by a terminal illness.