Zhao Changan, a contemporary master of traditional Chinese medicine, accidentally traveled through time and became a substitute bride who was jealous of the fake daughter and abandoned by her family. The original owner was a cowardly and incompetent tortoise girl, but she was forced by her family to marry the most powerful plague god in the capital, Zhao Lie, the violent and bloodthirsty King of Zhenbei, for her cousin. On their wedding night, Zhao Lie was seriously injured and fell into a coma, with all his limbs disabled. The imperial doctor concluded that he would not survive more than three days. But Zhao Changan used silver needles to cross acupoints and medicine stones as a guide to force him back from the gate of hell. From then on, this woman, who seemed weak but was as tough as a rock, lived step by step amid the swords and shadows at the gate of the mansion and in the court. She saves people with her medical skills, solves problems with her wisdom, and uses her patience and perseverance to turn the scattered palace into an iron-clad empire. However, when she finally got Zhao Lie's heart, she discovered that there was a shocking secret hidden in her body - every time she saved someone, her life would be consumed. And the man behind the scenes was the real and fake daughter who pushed her into the pit of fire. Faced with the choice between survival and morality, how should Zhao Changan break the situation?
