The story opens in Mingzhou City, a waterside town in Jiangnan. Its distinctive landscape, crisscrossed by waterways, has given rise to a special network for transporting corpses, providing the geographical foundation for a series of murders.
Six years ago, the shocking "Red Silk-Wrapped Corpse Case" rocked the court and remains unsolved to this day. The newly appointed prefect introduces a "New Policy for Female Officials," giving the heroine her chance to enter the profession.