Jung Kyung Ho as Lee Joon Ho Park Hae Soo as Kim Je Hyuk
Krystal Jung as Ji Ho Im Hwa Young as Kim Je Hee Kang Seung Yoon as “Jean Valjean” Lee Kyu Hyung as “Second-generation Chaebol” Choi Sung Won as “Spot” Jung Hae In as “Captain Yoo” Sung Dong Il as Chief Jo Jung Woong In as Assistant Chief Paeng Choi Moo Sung as Kang Ki Soo Kim Sung Chul as “Law Man” Lee Ho Chul as “Good-for-nothing Low-life” Jung Jae Sung as “Professor Myung” Ahn Chang Hwan as “The Henchman” Lee Hoon Jin as “Pinkie” Park Ho San as “KAIST” Jung Min Sung as “Dr. Ko” Joo Suk Tae as prison operations chief Ahn Sang Woo as prison manager Park Hyung Soo as Department Chief Na Kim Han Jong as large-goods carrier Kang Ki Doong as prison guard Choi Myun Dong (최연동) as vice chief Yoo Jae Myung Kim Kyung Nam Kim Ki Nam Lee Do Kyum Shin Jae Ha Choi Kwang Il Im Chul Hyung Yum Hye Ran Kim Yong Woon
This drama is about a special place where a baseball player and a variety of people experience prison life. The drama will share the lives and stories behind these prisoners as well as events that take place there.