Kang Seulgi, is a freelance photographer with a cheery composition and is loving everything about her new apartment. That is, except her neighbor who keeps her up at all hours of the night with his loud music. 

Kim Hanbin is a composer who is trying to make it big with his compositions. Up until this point he has lived his life in simplicity. When he hears a loud knock in the middle of the night, his life is changed forever. 

Can opposites really attract?