A true historical drama about King Sejong, the greatest ruler in Joseon history who sought to enhance national prosperity and military power through astronomy, and Jang Yeong-sil, the most remarkable scientist.
as Jang Yeong-sil
as King Sejong
as Minister
as Jo Mal-saeng
as Jeong Nam-son
as Jo Sun-saeng
as Im Hyo-don
as Crown Prince Yi Hyang
as Sa-im
as Choi Hyo-nam
as Shin-gae
as Yun Jung-bu
as Choi Man-ri
as Choi Cheon-gu
as Yun Sa-wung
as Eunuch Jeong
as Jo Seo-gang
as King's Soldier
as Baek-ho
as Oh Yang
as Sergeant
as Myung Envoy
as Guru
