Retired special forces Wei Zhao lurked into the old headquarters stationed along the river, and partnered with Meng Zheng, a military commander who had guarded the river defense for a long time, and was ordered to track down the serial murders in the river. Behind the murder, there was a hidden thread of enemy agents smuggling military blueprints. The two relied on their excellent practical skills and river defense experience to cut through the layers of fog, uncover the hidden enemy spies, and guard the core secrets of river defense.
