
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 Ji-hwan

Yun Gyu-yeop

Shi-yeong

Jae-deok

Officer Seo

Officer Jang

Jeong Yeo-gyun
Kim-in

His Majesty

Captain of Guard
His Excellency Hwang

Min Dae-gam

His Excellency Song

His Excellency Lee

His Excellency Yu
Tae-baek
Mole
Leader of the Office of Special Advisors
Sook-hyang

Prisoner

Sa-gwan
Gi Nyeo-deul
Mu-kwan's Underling
