Jungkook recently joins one of the finest theatre groups in Korea: Curtain of Actors Company (CoA) and he can't wait to star in its newest production. However, he learns too late that his theatre hero is not participating in this play, instead, a new girl who seems to hate him at first sight takes over. 

Heart starts beating during their first eye contact....as they thought that will be the first and last eye contact, fate connect them together again....will they let each other know whats in their heart or will they keep it just for themself?