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.
as Seol-joo
as Hong-ri
as Chang-gang
as King Sejong
as Pan-soo
as In-ha
as Hong Man
as In Ha
as Yu Bong
as Sa Ma-seon
as Kkya Oh Ryung
as Bang Ok
as Mu-saeng
as Oh Cho
as Bong Gu
as Researcher
as Researcher
