Ancient Korea, 1728. Swordsman Kim Ho, guard of King Yeong-jo of Joseon, is demoted and sent to work in Uigeumbu prison. When night falls, the prison is assaulted by the master warrior Do Man-cheol and his powerful henchmen for the purpose of freeing Lee In-jwa, who has been condemned to death for rising up in revolt against the king.
| Actor | Role |
|---|---|
 Jung Hae-inKim Ho | Kim Ho |
 Kim Ji-hoonLee In-jwa | Lee In-jwa |
 Lee Won-jongMan-seok | Man-seok |
 Jo Jae-yunDo Man-cheol | Do Man-cheol |
 Hong Soo-ahYun Seo-yeong | Yun Seo-yeong |
 Ryu Tae-joonKing Yeong-jo | King Yeong-jo |
 Hong Seung-jinYun Ju-sik | Yun Ju-sik |
 Kwon Hae-sungChoe Jung-gu | Choe Jung-gu |
 Lee Kyu-bokYu Il-un | Yu Il-un |
| JJeon Seong-ryeolKim Seong-sik | Kim Seong-sik |
| GGeum Dan-biQueen Dowager | Queen Dowager |
 Jung Ji-hoonDong-seok | Dong-seok |
 Lee Tae-geomScholar | Scholar |
 Park Cheol-minHwang Jin-gi | Hwang Jin-gi |
 Lee Jae-yongFirst Vice-premier | First Vice-premier |
 Lee Hae-youngUigeumbu Head | Uigeumbu Head |
 Song Min-hyungMerchant | Merchant |
 Kim Ik-taeChief Royal Secretary | Chief Royal Secretary |
 Lee Cheol-minOk Sa-jang | Ok Sa-jang |
 Park No-shikIronmonger | Ironmonger |
| LLee Seung-biMother | Mother |
| CChoo Sang-rokDisguised Eunuch | Disguised Eunuch |
 Keum Dan-biQueen Dowager | Queen Dowager |
 Park Ho-san[Royal investigation bureau judge] | [Royal investigation bureau judge] |