A sexual scandal between a math teacher and a student in a prestigious high school ended in tragedy. 4 years later they meet again, now as adults, to reveal the corruptions in school and to regain one's reputation as a teacher.
Ji Yoon-soo
Baek Seung-yoo
Noh Jung-ah
Sung Ye-rin
Sung Min-joon
Yoo Hye-mi
Ryu Sung-jae
Min Hee-seung
Baek Min-shik
Shin Kyung-in
Noh Yeon-woo
Lee Hyun-jae
Kim Ji-na
Ji Hyun-wook
Ryu Hyun-il
Baek Min-jae (young)
Noh In-Hyeong
Principal Oh Jin-taek
Vice Principal Choi Sung-han
Kim Jin-hee
Han Myung-Jin
Jang Kyu-young
Park So-jung
Ji Yoon-soo (Young)
