Bok Su puts his old school uniform back on and marches into his old school he dropped out almost a decade ago. But the start doesn't seem easy. Old time friends with complicated history show up to be his homeroom teacher and the new chairman of the school board. Just to make things worse, Bok Su is assigned to the same classroom as his nephew, and witnesses In Ho being bullied to his classmates.
세호는 복수를 이용, 설송고의 부정적인 여론을 잠재우는 데 성공한다.
한편 수정은 정규직 전환에 성공하지만 9년 만에 복학한 복수의 담임으로 배정됐다는 사실에 충격을 받는데..
