Yeonjun is a popular student at the university. He studies at the sports department and is a professional swimmer, taking first places in competitions. Everyone knows Yeonjun, everyone wants to be friends with him and girls want to date him.

Once, during a joint lesson with the Faculty of Arts Yeonjun notices a silent guy named Beomgyu. Beomgyu is actually deaf and cannot speak, which makes him an outcast. Yeonjun pays attention to this mute guy because he sees him in every general lesson.