This story about you(Lee Gieun) who is BEAST's Lee Kikwang's younger sister. When your brother debuted with BEAST,you started to hang out with them. All of them treated you like their younger sister except for one of them,Yoseob. He treated you more than bro-sis relationship.You actually had fell for him since your brother introduced him to you. Since then,your love story begins.....    .