Su Yunxi, the top toxicology expert in the 21st century and director of the emergency department, accidentally traveled through time due to a laboratory explosion, and his soul traveled to the stupid legitimate daughter who was laughed at by everyone in the Dajing Dynasty. The original owner's biological mother died young, and was pushed into a lotus pond and drowned by her stepmother Liu Shi and her concubine Su Yunrou. Her ex-fiancé, Prince Xiao Heng, was snobbish and cool. He had already had a secret affair with his concubine and wanted to annul the engagement.
Su Yunxi, who has returned with modern knowledge of toxicology, first aid, and forensic medicine, is no longer timid and stupid. In the beginning, she kills her concubine, toughens her stepmother, and slaps the prince in the face. Late at night, she accidentally encounters the cold-faced Prince Jing Xiao Jin who was assassinated and was poisoned with the strange poison "Guanghun San". She temporarily saves him with her professional medical skills, and the two have formed an indissoluble bond since then. Su Yunxi relied on her amazing medical skills to open a rejuvenation hall, hang pots to save the world, and earned the title of "Miracle Doctor Su" in the capital; Liu's mother and daughter repeatedly poisoned, framed, and framed them, but she used poisonous skills and wisdom to resolve them one by one, leaving the villains to suffer the consequences. While running a medical clinic and solving various difficult and murderous cases, she secretly investigated the truth behind her biological mother's mysterious death that year, and gradually uncovered the irrefutable evidence that her stepmother chronically poisoned the royal family and colluded with the prince for personal rebellion.
Prince Jing Xiao Jin is the emperor's brother. He has been sincerely moved since he met Su Yunxi. He has been the strongest supporter throughout the whole process, silently protecting her and helping her dig into old cases and fight against the turmoil in the court. While Su Yunxi was trying to eradicate the strange poison that had been entangled for three years by Prince Jing, he was also working step by step to liquidate all his enemies: at the palace banquet, he publicly revealed all the evidence of Liu's poisoning of his biological mother and the prince's private support of dead men and rebellion.
