This drama series revolves around the Zheng family, headed by Chenglong Zheng, a knife-wielding folk artist in Beiping. He and his three apprentices - Dezheng, YuZheng, FeiZheng, as well as his daughter YingZheng, are subsequently drawn into the battlefield in different ways, bravely fighting against the Japanese army. At the same time, this drama presents an expansive perspective on several events that occurred from the 1933 Great Wall Resistance to the victory of the Anti-Japanese War in 1945, in the regions of Beijing-Tianjin, North China, and even all over China. With rich narratives, it sings an epic yet sorrowful song of the ultimate unity of Chinese military and civilians against foreign aggression.
After the "September 18th Incident", the Japanese army attacked Rehe, and the garrison of Chengde fled, causing chaos among the refugees. Chenglong Zheng, at the age of 58, was performing with his three apprentices outside the Great Wall when the blood-thirsty second apprentice, YuZheng, got into a conflict with the fleeing soldiers, getting separated from his family. By chance during his escape, YuZheng joined the 29th Army's Big Knife Squad and was forced to fight against the Japanese army attacking Xifengkou. YuZheng's first experience on the battlefield was a brutal hand-to-hand combat...