Yu Dongfeng, a farmer from Jiaodong, joined the Kuomintang army in order to collect the betrothal gifts for marrying Xiaofeng, a girl from the same village. Unexpectedly, he fled back to the village halfway and found that the village was swept by the Japanese. Xiaofeng's life and death were unknown. Dongfeng learned that the mastermind behind the scenes was Su Daya, the chairman of the maintenance association. He not only killed Su Daya but also caused a stir in the city. At the critical moment, Zhao Zhiguo, the company commander of the Eighth Route Army, came to the rescue, and Dongfeng subsequently joined the Eighth Route Army. Four years later, Dongfeng was already a battalion commander of the Eighth Route Army. With his "wisdom, fierceness, and stinginess", he led the team to win one victory after another. Once, Dongfeng's troops and the Japanese army had a tragic bloody battle, and the regiment commander died. Dongfeng was eager for revenge, but he did not see through the devil's trick. He led the team to pursue and was ambushed, and the whole army was wiped out. Dongfeng had no face to go back, and joined the county brigade under an assumed name. He led the county brigade to continue to grow, and reunited with the old troops in a battle. Dongfeng returned to the army, but suddenly asked to sing in the art troupe. It turned out that Zuozhu, the enemy who destroyed the troupe, loved to listen to opera. Dongfeng took advantage of Zuozhu's party and killed his enemy. In 1945, Dongfeng led the soldiers of the new 7th Brigade of the Shandong Column of the Eighth Route Army to start a new campaign on the Jiaodong battlefield.