In 1961, there is a young girl named Dong Yi who lives in a slave village. She then decides to work in the palace as a servant. A few years later, she meets King Sukjong and they fall in love with each other. The King later makes her his concubine. But another concubine, Jang Ok Jeong dislikes Dong Yi and tries to frame her a few times. But, in the end, the King and Dong Yi have a son together and he later becomes the new King of Joseon.