A modern female forensic doctor travels back in time to become the scapegoat concubine who was beaten to death in the family of an ancient first-class official. She has a golden finger with the "Forensic Eye", which can see through all lesions, toxins and fatal injuries in the human body. She did not choose to endure and survive, but used this set of modern medicine and criminal investigation methods to reduce dimensionality and strike, and in the harem, the most dangerous battlefield, she used disease as a knife and frame-up as bait to turn murder cases into her own promotion ladder. She does not want to be a beloved concubine, but wants to be the "upright female doctor" who rectifies the palace medical system and solves cases in palace battles to be promoted.
