Prince Yeonsan-gun turns into a tyrant out of grief for his mother's death. He orders beheadings of all the officials who displease him or who advised the previous king to depose the queen. He becomes crueler by the day. But in 10th year of his reign, he is kicked out of the throne and dies a tragic death.
King Yeon-san

Jang Nok-su

Park Won-jong

Im Sa-hong

Lady Seon-deok

Queen Shin

Prince Je-ahn

Park Seung-hak

Queen Yoon

Hwang Yun-heon

Choi Bo-bi

King Seong-jong the Great

Prince Jin-seong

Kim Jae-won

Unknown Role

Um So-yong

Unknown Role

Unknown Role

Mrs. Bongbo

Min (Wonjong's wife)

Mrs. Shin

Gwang Han-sun

Sangrimchun

Mrs. Lee

Gwi-in Jeong

Kim Soon-son

Lee Pan-soo

Princess Hyun-sook

Unknown Role

Unknown Role

Unknown Role

Won-jeong's mother

Unknown Role
Unknown Role

Unknown Role

Court lady
Queen Su-geun
Lady servant

Lady servant

Unknown Role

Unknown Role

Yoon Pil-sang

Unknown Role

Shin Su-dong

Shin Su-young

Unknown Role

Yoo Soon-jung

Yoo Ha

Unknown Role

Unknown Role

Unknown Role

Lord Eo-young
Hyung-ro Yoon
Woon-san
Unknown Role

Old man

Maid
Training leader

Unknown Role
Shin Soo-gyeom

Unknown Role
Unknown Role

Unknown Role
Unknown Role
Unknown Role
Unknown Role

Unknown Role

Unknown Role

Unknown Role
Beauty
Unknown Role
Yoon Heonjip's servant