Su Qingwan, the concubine of the Prime Minister's Palace in the Zhou Dynasty, was suppressed by her aunt since she was a child and lived a cautious life. The eldest sister Su Qingyao was supposed to marry the violent prince Xiao Jingchen, but when the sedan chair was approaching, she planned to escape from the marriage and pushed her concubine onto the sedan chair to take her place. On the wedding night, the prince discovered that the bride had been swapped. In anger, he threw Su Qingwan into the cold courtyard and left her to fend for herself.
Su Qingwan originally thought that she would die quietly in this deep palace and cold courtyard, but unexpectedly activated the memory of her past life - she was originally a princess of the previous dynasty, possessing peerless medical skills and secrets of organs. In order to protect herself, she worked step by step, curing plagues, solving strange cases, and helping the prince stabilize the court, but she always hid her true identity.
Prince Xiao Jingchen was extremely disgusted with this "substitute bride" at first, but in repeated confrontations, he was attracted by her amazing talents and perseverance. When he finally discovered that the person he admired was actually an orphan from the previous dynasty, and his hands were stained with the blood of her closest relatives, a chase for his wife and crematorium that spanned national hatred and family hatred began...
Concept: The love-hate entanglement between the princess with memories of her past life and the prince of the East Palace