In 1941, along the Jinpu Railway. On the main north-south artery of the Japanese army, every military column was filled with blood and fire. Lu Fang, the accountant at Ping An Warehouse, is actually an intelligence analyst at an underground transportation station. He has a special ability: sniffing out anomalies from seemingly normal accounting flows, deciphering the truth from complicated telecommunications codes, and cross-verifying the authenticity of each piece of information from three independent sources. The Japanese military's special education department set up bureaus one after another, using carefully forged "top-secret information" to trap sabotage groups along the railway. Lu Fang deduced through economic accounts that the "weak defense zone" claimed by the Japanese army actually transferred the garrison troops from three surrounding strongholds. That was a trap, not a loophole. He set up the situation in reverse and used a fake mobilization order to cause the Japanese armored train to collide with his own transport train. The railway was paralyzed for three days, and we took the opportunity to complete the transfer of materials. But the price of victory is exposure. The most effective traffic officer, Zhao Tieshuan, was nailed alive to the signal machine by Masao Kawada's military police in order to cover the radio station. Before he died, he only sent back half of the password. Lu Fang wiped the fog from his glasses and opened a new page in the ledger. He needs a more hidden stronghold, colder methods, and - to find out the shadow hiding inside and delivering intelligence to the Japanese army.
