Go Hye Mi, aged 16 ( a pretty yet smart girl ) who transferred to the prestigious Seoul High School. She found her childhood friend in class 3-1 named Park Seo Jun whom used to have a crush on Hye Mi. Jeon Jungkook who always bully her and quarrel about little things and not in good terms suddenly had a change of attitude towards her and it's love. Park Seo Jun often comes to the rescue and soon it become a love triangle. Who will Hye Mi choose?