
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