On a sunny day, a boy named Jo-kang meets Ari, a girl in a yellow raincoat, and they become friends. Jo-kang falls helplessly in love with the quirky but attractive Ari, but one day, she suddenly disappears.
as A-ri
as Cho Jo-kang
as Monk
as Young A-ri
as Young Jo-kang
as Dr. Chu
as Joon-chul
as Jo-kang's Dad
as Byeon-ja
