In a small writing shop in the south of the city, Rong Heng took over a murder case of an embroiderer. The deceased held an official jade in his hand, which was exactly the same as the one belonging to his father who died suddenly three years ago. The secret room, door bolts, crimson satin, and the dragon robes embroidered outside the palace—the palace incident that burned the prince to death sixteen years ago were all connected again by an embroidery thread. Pei Yan, the young minister of Dali Temple, said coldly, "If you continue to investigate this case, you will die." She raised her eyes and said, "I'm afraid of death, but I'm even more afraid that my father will die in unknown circumstances." A private lawyer and a cold-faced young minister investigated the case side by side, all the way into the depths of the imperial city. The prince is not dead, his dragon robe is embroidered with a new name, and the person behind the scenes is close at hand. A great change of dynasties begins with the corpse of an embroidered lady.