In the 15th century, despite so many accomplishments he has made for the people, King Sejong, his biggest goal is still remaining; the invention of original letters that can be read and written by all the people. But courtiers who want to dominate the knowledge and the power, are against his will and discourage his belief. Frustrated King Sejong hears about a bonze Sinmi a phonogram expert, and secretly brings him in the palace.
송강호
as King Sejong
박해일
as Monk Shin-mi
전미선
as Queen Soheon
최덕문
as Jung In-ji
정해균
as Go Yak-hae
김준한
as Crown Prince
차래형
as Sooyang Prince
오현경
as Old monk
남문철
as Choi Man-ree
금새록
as Jin-ah
탕준상
as Hak-jo
정인겸
as Kim Moon
