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.

A historical drama about Prince Yeon-san of Joseon as a prince trying to restore the status of his mother, the deposed and executed Queen Yun.

Cheol-gi who dreams of a society that embraces justice begins classes at a night school. There he learns about political and social contradictions and the realities the people face. While doing research on factory conditions with his classmates Tae-il, Min-sook and laborers Hyun-sil and Bong-joon, Cheol-gi learns about the Revitalizing Reforms system and the improper practices in emergency measures. After the military revolution, during the election for a general student body in a move towards democracy, Cheol-gi unwittingly becomes a man on the run when emergency martial law is implemented in response by the government. Cheol-gi blames himself when hears about the deaths of Tae-il and Min-sook during the Gwang-ju Uprising from Hyun-sil and Bong-joon. Just when he and Hyun-sil try to start a new life together, Cheol-gi is arrested and put in jail. Inside the prison, he starts another move towards prison democracy.