Orphaned at young age, abandoned by his uncle and later by his adoptive parents, Sang-doo’s life has been a succession of difficulties. At 27, he makes a living by seducing older women in order to support his daughter’s hospital fee. However, the love he has for his first love, Chae Eun-hwan, keeps him happy and optimistic. When he runs into Eun-hwan again, he decides to give another chance at his love and goes back to high school to be Eun-hwan’s student.

Narusawa Haruto es el presidente de una compañía de juegos. En la superficie, Haruto es un hombre feliz con riqueza y familia. Sin embargo, la tragedia llega cuando su hija es secuestrada. La única forma en que Haruto puede recuperar a su hija es deshacerse de la policía y trabajar con su esposa, Michiru, para luchar contra los secuestradores.