Ki Moo-Hyeok, a lawyer with a high winning rate, only cares about money. Due to a murder case at a high school which he deals with, his reputation as a lawyer hits rock bottom. To regain his good name as a lawyer, he sneaks into the high school and work as a temporary teacher. He tries to reveal a secret which the students have, and gets involved with Teacher Ha So-Hyun, a P.E. teacher who loves her students. They then face the students'secret.
Yoon Kyun-sang
Lee Jun-young
Geum Sae-rok
Choi Yu-hwa
Choi Kyu-jin
Jang Dong-ju
Jeong Da-eun
Byung Hun
Kwon So-hyun
Jun Suk-ho
Woo Hyun-ju
Suh Yun-a
Kim Ye-won
You Seong-joo
Kim Min-sang
Seo Ji-young
Lee Bit-na
Lee Jung-min
Shin Jae-hwi
Lee Jung-jun
Joo Se-Bin
Jeong Soo-hyun
Yoo Hye-jin