Gu Nanyi, the chief female forensic doctor, died in the line of duty and transformed into the most unpopular concubine in the ancient Shangshu Mansion. She was forced to marry Xiao Jue, the god of war who was disabled due to injuries and had a violent temper, on behalf of her eldest sister. Everyone in the capital laughed at her life as thin as paper, jumping from one fire pit to another.
On the night of the wedding, before the groom arrived, the body of a guard was carried into the bridal chamber. The crippled king Xiao Jue sat in a wheelchair, furious, claiming that if the murderer could not be found, everyone would be buried with him.
When everyone was scared out of their wits, Gu Nanyi calmly stepped forward and used a homemade scalpel to demonstrate his miraculous autopsy skills and pinpoint clues to the murderer, shocking everyone.
From then on, she practiced forensic medicine in the name of the princess. A secret room murder case made of ice, a serial flower picking case traced through pollen, a murder case where rare toxins were disguised as birthmarks... She has investigated the world's strange cases and torn away all disguises.
But the legendary cruel prince gradually fell into disgrace from his initial scrutiny and use, and turned into the most loyal "autopsy assistant", handing her the knife, lighting, clearing the scene, protecting her firmly behind him, and announcing to the outside world: "Who dares to touch my princess?"
While working together to investigate, the two gradually uncovered that behind each case, they all pointed to a common source - a carefully planned huge conspiracy to subvert the court, and this conspiracy was also closely related to Xiao Jue's disability and the death of the original owner...