In the seventh year of Yongle, Shen Yan'an, a Qianhu household in Fusi, Jinyiwei North Town, went from being the emperor's sharpest knife to a murderer who massacred his mentor's entire family overnight, and was wanted by the court. In order to avenge his grievances, he was forced to join forces with Su Tan'er, the female shopkeeper who controlled the underground world of the capital, and dealt with the open and secret arrows of the factory guards and the court. When the cocoons are peeled off, the final truth points to a shocking treasonous conspiracy that shakes the country, and the biggest man behind the scenes is actually him...
