Kim Kiera (OC) live only with his older brother, Kim Himchan and her younger brother, Kim Myungsoo. Both of her brothers became more protective after what had happened to prevent their sister to be hurt again. The school president Choi Junhong also known as Zelo have the same interest as Kiera which is playing basketball. From that they became a good friends. And what bothers Kiera is that everything Zelo did reminds her of her ex boyfriend. Will Kiera forget the past and move on to start her new life with a new guy?