Amid the chaos of the late Ming Dynasty, Gu Changping, born into a military household, narrowly escapes death and establishes himself in Jinling under the identity of a Jinyiwei mounted guard. Moving between the imperial bureaucracy, warlords, and the powerful gentry of Jiangnan, he uses ruthless methods to root out corruption, fight rebel bands, and confront the Donglin faction. From bloody battles north of the Yangtze to the lands south of the river, Gu Changping advances cautiously through the decaying and collapsing political chessboard of the Ming Dynasty, maneuvering among rival forces as he struggles to carve out a path to survival in an empire on the brink of ruin.