In the 1930s, the iron hoof of Japanese imperialism trampled on the Central Plains. In Qiaojiabao, Chaihe, Northeast China, tofu maker Qiao Richeng had three sons. The eldest son died in the war in his early years. The second son Qiao Li was promoted to company deputy in the Northeast Army and was about to return to the village to marry the beautiful girl Dou Xiaoman (played by Yi Shan). Who knew that the second son also died in the war. The pain of losing his son made Qiao Doufu heartbroken, and he vowed to keep the last seedling of the Qiao family at all costs. Unfortunately, the third son Qiao Qun (played by Zhang Tong) was born to like to dance with guns and sticks, and had already made up his mind to fight the Japanese on the battlefield. He did not accept his father's arrangement of his marriage with Xiaoman, ran away from his hometown secretly, and was appreciated by Xie Tiehua, an instructor of the Northeast Army Military Academy by chance. Qiao Qun got what he wanted, and the worried Qiao Doufu chased him to Fengtian. Who knew that a series of encounters made the father and son become soldiers one after another. Father and son joined the battle. In the chaotic times, an ordinary father and son embarked on a journey to defend their country...