When a judicial apprentice goes behind bars while on an undercover job, he plays the hand he’s dealt to survive prison and get his payback.

Kang Ha-neul, Lee You-young, Heo Sung-tae, Kim Sang-ho, Kang Young-suk, Park Seong-geun, Kang Shin-hyo, Jeong Man-sik, Kim Si-eun, Sung Ji-ru, Cha Yeob, Yoon Byung-hee, Lee Dong-won, Moon Sung-keun, Heo Dong-won, Choi Dae-hoon, Han Jae-yeong, Kim Ji-na, Oh Tae-kyung, Choi Moo-seong, Han Kyu-won, Jo Hee-bong, Lee Ha-yul, Kim Min-seung, Yoo Ha-bok, Kim Byung-cheol, Seo Myung-chan, Lee Yang-hee, Jeong Hwee Wook, Moon Jong-won, Park Joong-geun, Kim Kyu-baek, Hwang Dae-woong, Kim Wang Do