In the autumn of 1938, the Battle of Wuhan entered a fierce stage. Underground party member Qin Huaiyuan was ordered to infiltrate the "Mei Agency", the Japanese military's secret service stationed in Wuhan, code-named "Gu Yan". On the surface, he is the translator of the Japanese and puppet government, but in fact, he is a sharp blade that pierces the enemy's heart. During an intelligence handover, Qin Huaiyuan accidentally discovered that the Japanese army was planning a "scorched earth plan" against Chongqing - using chemical weapons to destroy the rear areas of the Anti-Japanese War. Time is running out, and he must find a balance between exposure and silence. He must use his language talent and meticulous thinking to deal with the cunning Japanese military spy chief, the suspicious Wang Puppet official, and a seemingly ordinary female bookstore owner. The true identity of the female boss is a mystery. Is she a military agent or does she have another agenda? Qin Huaiyuan walks on the tip of a knife. Behind every smile there may be murderous intent, and every handshake may convey a death code. When the mole betrayed the contact point, he had to bid farewell to his comrades in person. In the test of blood and fire, he gradually understood that the real war of resistance not only requires guns and cannons, but also needs to ignite the fire of hope in silent places. In the end, can he destroy the laboratory before the Japanese army takes action and protect the future of millions of compatriots?
