Kim Myungsoo is an average teenager who gets an opportunity to go to Seoul High School. There he meets Krystal Jung.. the most prettiest, smartest and the nicest girl in Seoul High School. She is a Korean American who is best friends with Sulli since kindergarten. Sulli has a boyfriend named Hyunwoo. Krystal and Myungsoo then begin to date when Krystal's ex-boyfriend Woobin tries to take her away. Myungsoo's best friend Suzy tries to steal him away from Krystal. Will their love win in the end or will it not..??