During the reign of King Sejong in the 15th century, the Joseon Dynasty was the embodiment of the perfect state. To the Ming China, the aspiring imperial power, Joseon presented an obstacle to territorial expansion. To protect themselves from war, King Sejong develops a secret weapon to defend their territory and take back their land and supremacy.
Jung Jae-young
as Seol-joo
Han Da-gam
as Hong-ri
Huh Joon-ho
as Chang-gang
Ahn Sung-ki
as King Sejong
Shin Jung-keun
as Pan-soo
In Gyo-jin
as In-ha
Lee Do-gyeong
as Hong Man
In Gyo-jin
as In Ha
Cho Won-hee
as Yu Bong
Jung Sung-mo
as Sa Ma-seon