Lu Zhaohua, a genius in cardiac surgery, saw the entire mansion being ransacked on the third day after he traveled across time to become the legitimate daughter of Zhenbeihou Mansion. On the execution ground, she was branded with a mark of crime on her forehead, became an official slave, and was thrown into the "Dark Water Hall", a magical cave where death warriors and medicine men were trained.
At the time of life and death, she relied on her knowledge of toxicology that transcended her time to identify the poison poisoned by the powerful Prince Jing, Xiao Jue. In order to survive in a desperate situation and to investigate the murder of her family, she made a dangerous plan: to cure the prince who was plagued by evil and unpredictable temperament, to become his indispensable person, and to take revenge.
Since then, a gamble with life as a bargaining chip has begun. The incense gifted by the palace, the hidden arrows of the medicine man, the inner demons spawned by cold poison, the fatal frame-up at the palace banquet... Numerous murderous intentions follow closely. Outside of the chess game, Qintian Supervisor Pei Huaiyuan is using the stars as a pen to write everyone into his ruthless star map of "healing the rotten dynasty".
When Lu Zhaohua finally cracked open a corner of the conspiracy, he found that the blade of revenge was pointing in the wrong direction. The enemy has long been turned into bones. The Prince Jing in front of her is the same victim as her, but the real chess player is smiling and inviting her to dance, treating the living person as a specimen and the dynasty as a diseased body to be dissected.
Medical skills can save lives, poison skills can kill people. Caught between overwhelming power and precise calculations, Lu Zhaohua grasped the golden needle in his hand. She refuses to be anyone's knife, but wants to find her own path as a "poison doctor" in this world of cannibalism - treating those who can be cured, and killing those who deserve to be killed. As for this dying dynasty, if you come to seek medical treatment, the consultation fee will be very expensive.
