new school, new life - at least that's the idea. former schoolgirl delinquent oh sehyun is trying to stay on the straight and narrow, even if it means taking bullying in order to keep her bad reputation hidden. this would be easier if not for her best friend and still delinquent kai, who won't stop hanging around, and suho, the cute and chivalrous student council member who thinks sehyun needs protecting...