During the Yongle period of the Ming Dynasty, bizarre murders occurred one after another in Shuntian Mansion in the capital. The deceased all held half a bronze token and had contact with the mysterious embroiderer before their death. Lu Zhao, the gold medal captain of the Jinyi Guards, relied on his super observation and logical reasoning skills and was ordered to investigate the case, but he repeatedly ran into deadlocks during the investigation. By chance, he met Su Qinghuan, a folk girl who was proficient in mechanics and cryptography. From the initial suspicion of each other to the tacit cooperation, they worked together to solve seemingly unrelated mysteries one after another. As the investigation deepened, they discovered that behind these murders was a huge conspiracy concerning the stability of the court, and that half of the bronze token was the key to opening the door to the conspiracy. Faced with numerous crises and obstructions from many forces, can Lu Zhao and Su Qinghuan clear away the fog, find the real murderer, and protect the peace of the Ming Dynasty?
