Kingdom of Joseon, ancient Korea. A usurper has conquered the throne. His ministers are being systematically eliminated by a mysterious assassin. An arrogant master swordsman is in charge of putting an end to the carnage.

Choi Min-soo
as Choi Ji-hwan

Cho Jae-hyun
as Yun Gyu-yeop

Kim Bo-kyung
as Shi-yeong

Lee Jong-soo
as Jae-deok

Yoo Yeon-soo
as Officer Seo

Ki Joo-bong
as Officer Jang

Jeong Seong-hwan
as Jeong Yeo-gyun

Jo Sang-geon
as Kim-in

Kang Shin-il
as His Majesty

Kwon Hyuk-ho
as Captain of Guard