In 1940, as the puppet regime Tianjin latent spy member director of our party underground workers Shen Xilin in Tianjin, lost contact with the tissue and isolated, but he never give up their faith, to find an opportunity to obtain information. At the same time, the original Tianjin middle spy, training Koko elders of Tianjin tan as the French concession xunbufang class head, waiting for an opportunity to obtain information. Old Zhou CPC underground organization culture -- the late Communist Party member Han Zisheng Han Peijun adopted son. Old Zhou with sub students at a telephone office working conditions, eager to avenge his father's psychology, the training, to transfer information. Vicious cunning Japanese invasion intelligence chief Takeda Hirohito, is desperate to destroy the Communist Party underground organization. Tianjin staged scenes be struck with fright information warfare. Shen Xilin use of special status, has printed counterfeit money, the Japanese Zero fighter sweeps drawings, plans and other information, through the sub students transfer to our party. On the eve of victory, the Commission and the Japanese military police collusion, plans to destroy our party underground information network. Shen Xilin received intelligence, a child is passed to the week old, old Zhou careful layout, crush the conspiracy of the enemy. Shen Xilin was arrested to peiping.