In 1938, when the War of Resistance Against Japan was in full swing, and against the background of cooperation between the Kuomintang and the Communist Party, Chiang Kai-shek listened to the slander and ordered Xi’an’s secret service organization Xuan Xiafu, a senior councilor of the 18th Army and a member of the Communist Party of China, was dismissed secretly. This move sparked strong protests from the Communist Party of China. The pressure of public opinion was too great, and the Kuomintang could only set up an anti-revolutionary agency in Xi'an, and began to investigate the case of Xuan Xiafu's disappearance. Wu Zhongming is an underground member of the Communist Party of China and a former Central Union agent. He has also become a counter-revolutionary commissioner recognized by both the Kuomintang and the Communist Party. The anti-revolutionary agency led by Wu Zhongming has many people, such as the Xi'an Army, Police, Special and Eighth Route Army Xi'an Office, it can be said that there is an enemy among us, and there is an enemy among us. ! During Wu Zhongming's investigation of Xuan Xia's father's case for two months, it was a duel on the blade and a contest of human nature. In the end, under the guidance of the underground party organization, and the continuous pursuit of everyone for the sake of justice, Wu Zhongming finally obtained the secret order of Xuan Xiafu. The evidence is conclusive, Chiang Kai-shek can only admit to the CCP and swallow the bitter fruit himself