혜진은 자신이 학교에 찾아가 벌였던 일이 만들어 낸 나비효과에 크게 충격받는다. 상섭의 선택을 종용한 최선국어를 찾아간 혜진은 백발마녀 최형선으로부터 호된 충고의 말을 듣게 되는데.. 힘들어 보이는 혜진을 위로하고 싶었던 준호. 준호는 자신을 뜻밖의 장소로 데려간 혜진에게 놀라고, 혜진은 준호에게 하지 못했던 이야기를 하는데..

Pyo Sang-sub tells Hye-jin that he will be teaching at Choisun Academy. He tells her that the mid-term incident made him think about being a teacher, and it led to quitting his job and starting a new career. Hye-jin is shocked to hear the news though she had an argument with him, she still had respect for him. Meanwhile, Jun-ho doesn’t have a clue why Hye-jin feels complicated about Sang-sub.