Jiyeon is a normal school girl whose best friend is Ji Eun(also known as IU). Both of them have known each other since kindergarden. They are in the same class in high school too. Whenever Jiyeon need any help, Ji Eun will always be there by her side. Jiyeon always treat Ji Eun as her older sister.

Baekhyun is the school flower boy, along with 11 more boys. They are EXO. There are Luhan, Sehun, Chen, Kai, Tao, Xiumin, D.O, Suho, Lay, Kris, Chanyeol and Baekhyun. 

Jiyeon hate Baekhyun as he is very mean and cold towards other people, and Baekhyun hate Jiyeon, since Jiyeon is very mean towards him, but until one day, EVERYTHING change!!