In 1942, the flames of the Japanese invasion of China spread to the Hebei Plain. Surrendering was the only way out, and resistance was the ultimate way out. The people of Hebei were mobilized to fight against the Japanese army, and Gaojiazhuang mobilized a large number of militia. In order to fight against the Japanese aircraft and artillery, the local people used the terrain to dig out a series of intricate tunnels. The militia captain Gao Chuanbao (played by Zhu Longguang) used these clever tunnels to lead the militia to fight the Japanese army in a roundabout way. Although he had suffered a lot because of the betrayal of the scum Tang Binghui in the team, Gao Chuanbao, who was both wise and brave, finally led the team to use the tunnels to encircle and suppress the Japanese army, cleaned up Tang Binghui, and captured the Japanese leader Yamada alive. The victory of the tunnel war sounded the strongest voice of anti-Japanese in Hebei.