Baek-hyung and Chea-young are childhood friends.They didnt think that they will be friends to lovers.Baek-hyung loves Chae-young very much. Twist will come in high school. Hyun-bin and Baek-hyung are close friends. Hyun-bin is a playboy type guy. And Young-joo is a stubborn type girl. Hyun-bin lost his 1st love.