Lee Youngmi (you) and Jung Hoseok are best friend since they are kids. They always together until they're in high school. But, since Hoseok debuted, he haven't much time to spend with Youngmi. without he knowing, Youngmi actually have a deeper feeling more than just bestfriend. But as time goes by, Hoseok was always busy, and then come the third person, Byungjoo.

Will Youngmi keep her feeling for Hoseok? or fall for Byungjoo?