You are Kim Joonhee, Kim Joonmyeon's younger sister. Your parents are always away from towns to do meetings, and you just live in the house with your brother. You are very beautiful, smart, but sometimes can be silly. And, you have two male bestfriends, Sehun and Kai, who are very handsome, smart, and sometimes can be silly too. But, as times goes by, you are in love with one of them, and one day, one of them confess to you. Who will confess to you ? Is he the one that you love?