You.(Kang Hyung-jul/think that you're Hyungjul) and Kang Seulgi are cousins. Seulgi had a friend named Seungwan that you both became childhood friends. After High school you decided to go in the Philippines for family problems and to continue study. After 5 years you came back to Korea to work as a Doctor while your two friends became a Kpop idol. You and Seungwan met again. The one you love.