Zhu Cheng, a native of Fanshan, Cangnan County, Wenzhou, enlisted in the military in 1928 and entered the sixth class of the Huangpu Military Academy. In 1934, he traveled to Japan to study at the Tokyo Railroad Institute. During this time, he actively participated in patriotic movements among Chinese students abroad. After returning to China, he was introduced to the Communist Party by Comrade Zhu De and held important positions such as commander of the fifth district of the Jiluhyu Military Region and commander of the first brigade of the North China People's Army. Throughout his life, he fought in countless battles, and on September 28, 1943, he bravely sacrificed himself during the anti-'sweep' operation in the southeast region of Cao County, Shandong, at the young age of 33. General Yang Dezhis personally inscribed his work, calling him the 'talent of the Iron Army.' The film documents Zhu Cheng's time from his return from Japan to his martyrdom, showcasing his leadership of the anti-Japanese militia in North China, his strategic intelligence, brave and decisive victories, and the heroic deeds of the militia fighting valiantly.