This drama tells the story that after the September 18th Incident, the Japanese invaders intended to turn Linkou Town in the Northeast region into the first sovereign territory outside Japan. They vigorously oppressed Fang Zhenyu, the owner of the "Zhengbei Goods Store" in Linkou Town, hoping to turn Fang Zhenyu into a puppet mayor to achieve the goal of controlling Linkou Town. Fang Zhenyu, played by Hu Bing, was persecuted by the Japanese army when he refused. Luo Tianhua, a capable officer of the Military Statistics Bureau, disguised as a shop owner and lurked in Linkou Town. Luo Tianhua, played by Lin Jiangguo, clearly captured every plan of the Japanese in the dark. In order to form the Anti-Japanese United Army, Luo Tianhua found Fang Zhenyu and persuaded him to join the Anti-Japanese United Army. To achieve this goal, he spared no effort to use every trick.