1942, Shijie Town, Guangde County, southern Anhui Province. Chen Shusheng, the son of Orion, was just an inconspicuous traffic officer on the outskirts of the New Fourth Army. While delivering a letter, he witnessed the entire team being destroyed due to intelligence leakage, and the blood of his comrades dyed the ancient Huizhou merchants' roads red. There is no system, no golden fingers - he only has the tracking and anti-tracking instincts that he has practiced since childhood, and the deep-rooted memory of every inch of the hilly water network. The Japanese special agent captain Hideki Kono has set up a dragnet and the puppet army's strongholds are as dense as a honeycomb. However, Chen Shusheng brought a piece of intelligence related to the survival of the southern Jiangsu base area, and used his ability as a "guerrilla master behind enemy lines" to the extreme in the secret cellar of Tofu House, behind the memorial tablets in the ancestral hall, and in the reed swamps at the ferry. When he strangled the first Japanese with a hunting snare, trapped a detachment with a bamboo stick array, and even secretly changed transport ships under the eyes of the Japanese army, everyone thought he was just lucky. Until Mary Thompson, an observer from the U. S. Office of Strategic Services, came to the door, Li Yaoting, the head of the underground intelligence station, slapped the table and shouted: "This guy can stand up to a company by himself!" But Chen Shusheng knew clearly: Behind every victory are the bones of his brothers. Niu Dazhuang blocked the gun for him, and Shen Jingqiu's tears fell on the code book. What's even more frightening is that Hideki Kono always seems to be able to predict his actions - who is the mole around him? When the international allied spy front "Haiyan" was fully launched, Chen Shusheng discovered that the next piece of information he sent would directly determine the life or death of tens of thousands of people. This time, he would combine the patience of the hunter, the ruthlessness of the guerrillas, and the cunning of the businessman on a certain death route.