"She is the most desolate widow in Da Chu. She squats in the corpse room and eats steamed buns to calculate the coins: 'Five taels for examining a corpse, and extra money for turning over old cases.' He is the most ostentatious cross-dresser in Da Chu. He walks around the yamen waving a round fan: ' Su Wuzuo, I will give you 20 taels for this serial murder case, and you will help me find the murderer. Unexpectedly, she used modern forensic knowledge to uncover the layers of conspiracy, and he used royal wisdom to tear apart the darkness of the court. - Until one day, she found half a jade plaque in the deceased's lapel, which fit perfectly with the half on his waist. "So you are Qi Zhao." His Adam's apple rolled, "I am the last princess of Daqi." When poisonous tongues and disguises collide, and when family and country are at odds with each other, will these two men, who are tied by fate, fight on their own, or will they leave their backs to each other?