Shen Qingling, a doctor in the Department of Modern History, had his soul penetrated into the body of Ning Ke, the humblest concubine in the Prime Minister's Mansion of the Great Yan Dynasty. The original owner was depressed and unhappy because he was paving the way for his sister-in-law to enter the palace, and died of illness in a side hall of the cold palace. When Shen Qingling took over this body, she faced not only the dilapidated side palace and the eyeing concubine, but also the cannibalistic imperial society. She decided not to hold back any longer. With her historical wisdom and ability to see into people's hearts that transcended the times, she stepped from the humblest promise to the top of power amid the red walls and green tiles.