The drama is about the third empress of the Goryeo era who fought against the Tungustic people of Manchuria in order to achieve their dream of reclaiming their old land.

The drama is about the assassination attempts on Emperor Jeong Jo's life during the 8 day period when he left the palace for a ceremony to honor his father who was killed by his grandfather.

In the Joseon Dynasty period, the kingdom was enveloped in a political maelstrom. Cheo-seon was born as a posthumous child and separated from his mother immediately. He was raised by Weol-hwa and the old Swe-gwi, who ran the eunuch school. When he meets So-hwa, the daughter of a powerful noble, he falls in love with her immediately. He voluntarily becomes a eunuch to be close to So-hwa and is assigned to work for Cho Chi-gyeom, a senior eunuch. Entering the royal palace, he sees King, Sung-Jong and So-hwa spend their first night together. He becomes So-hwa’s loyal protector. As the political battles rage on among the courtesans and wives in the palace, So-hwa is chosen by the king to be his queen and Cheo-seon vows to be her loyal servant. But So-hwa is eventually dethroned as the queen and leaves the palace in disgrace. Cheo-seon helplessly watches these events unfold and he secretly helps So-hwa. But in a cruel twist of fate, he is the one chosen to execute So-hwa’s death sentence by serving her a bowlful of poison. After So-hwa dies, he looks after her son King, Yeonsangun as if he were his own son....

This drama is about Emperor Wang Gun, the founder of the Koryo Dynasty.

Chuno follows the story of a runaway slave in Joseon times and the slave hunter who pursues him, with a woman who completes the love triangle.