On the eve of their wedding, Meng Zhiwu caught a glimpse of her fiancé's ugly love affair and deceived her into thinking that she was an orphan with no one to support her. A sincerely wrong payment will become a joke. She broke off the engagement on the spot, turned around and left Pei's house. The orphan girl performs acupuncture and medicine, detects strange poisons, saves the prince, gets involved in old cases of the Meng family, and reveals the truth behind the family's destruction. The fake brother lurks in the palace, but the real brother returns from death. A medical book reveals the century-old secret of the secret palace in southern Xinjiang, which is also the eternal obsession of the person behind the plan. Those who do evil will reap the consequences, and good and evil will eventually reincarnate. She saved his life, and he became her salvation. Everyone is afraid that the regent Lu Yanjue is ruthless, cold-blooded and crazy, but only Meng Zhiwu does not have the tenderness that protects her to the core.