Kim Minyoung is Donghyun's little sister. She used to leave with Boyfriend, a rookie group 2011, at Boyfriend's Dorm. There she met Kwangmin, Youngmin, Minwoo, Jeongmin and Hyunseong. She hated Kwangmin because of his 'cold' attitude while she adore Youngmin.

<3 HaeRa and Minwoo are childhood friends. They cared for each other but all change when they are now grown-up. They always arguing, teasing and making fun of each other. What will happen if Minwoo suddenly confess his love for HaeRa? Do you think HaeRa will reject or accept it?