Choi Min-sik, Han Suk-kyu, Shin Goo, Heo Joon-ho, Kim Tae-woo, Kim Won-hae, Im Won-hee, Park Sung-hoon, Jeon Yeo-been, Yoon Je-moon, Min Kyung-jin, Lee Dong-yong, Kim Seung-hoon, Kim Seung-tae, Choi Jae-sup
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.