Bae Jinyoung is a high school boy that falling in love with a girl name Kim Sejeong. He have a brothr, (not a real brother) name, Hwang Minyun that owned a cafe near their house. He also have a friend from Taiwan that live in the same room with him name Lai Guanlin (one year youngerthan him). But, the truth, they don't know what happened with them. They shared same feelings about, girl, love and their hobby, singing. Minhyun and Guanlin asked Jinyoung to confess at her and Jinyoung agree to do that. One day, Bae Jinyoung tries to confess at Sejeong but..