Young-Won Lee, a teacher's pet and model student, feels her heart racing toward a delinquent at this critical moment just before the college entrance exam. Unable to find a reasonable answer in books, she adopts the philosophy that the love hormone confusing lovers disappears after three months of dating. Consequently, she decides to show interest in the delinquent. What did you say? You hate nerds like me? Just wait, Haru Kang! I'll transform into a hot, flashy babe and make you fall for me!