The story follows high school girl Park Hae-eun who has almost everything she can want in life. The only problem is that her crush, new student, school heartthrob and childhood friend Kang Jonghyun, doesn't see her as anything more than a best friend. Because of being unable to confess her feelings to him outright, she confesses her feelings through love notes instead. After watching him in love, will she get the chance to ever be with him? And will Jonghyun discover how Hae-eun feels about him?