This drama depicts the turbulent period spanning from the reign of King Taejo (born Lee Seong Gye), the founder of the Joseon dynasty, to King Sejong.
유동근
as Lee Bang Won / King Taejong
Tae Min Young
as King Jeongjong
안재모
as Prince Choongnyeong / King Sejong
김무생
as Lee Seong Gye
이민우
as Prince Yangnyeong
최명길
as Queen Won-gyeong
Sun Dong-hyuk
as Lee Sook-byeon
