나연을 제대로 혼내 준 혜인. 하지만 그 결과는 혹독했다. 시험도 망하고, 퇴학 위기에 처한 혜인. 암울한 미래만 보이던 그때, 인생을 뒤집어놓을 커다란 사건에 휘말린다.
Na-yeon's family makes complaints to Hye-in's school about her forgery and fraud. Hye-in is on the verge of getting expelled, so she meets the school director of Cheongdam High and begs for mercy. There, she witnesses something she shouldn't have.