After the Songhu War in 1937, the Shenhai Concession became an isolated island. Xie Yanzheng, the former platoon leader of the 19th Route Army, was appointed to join the Binhai Special Committee of the Communist Party of China and became the youngest intelligence officer. He has a secret: he is born with the ability to read lips and can read every sentence of his enemy's dialogue across the street. But the price is that it is limited to three times a day, and you will get a splitting headache every time you exceed the limit. The Japanese military agency Sato Hongichi set a trap and all members of Wang Puppet No. 76 Were hunted down. Xie Yanzheng must use lip reading to intercept a secret report related to the life and death of the New Fourth Army. At the same time, the memories of the frontal battlefield kept flashing back - those comrades who died and the unfinished tactics. With the help of modern military knowledge, he proposed a solution to the situation in the form of "personal deduction", allowing the enemy to repeatedly fall short. But when the online line suddenly lost contact and the single-line rule was broken, Xie Yanzheng found that he had been hunted from three sides. And is Lin Jingqiu, the always-smiling telegraph operator next to her, a comrade or a trap?
