The film is set against the backdrop of the Anti-Japanese War. It tells the story of General Yang Jingyu and the Anti-Japanese Allied Forces fighting a desperate battle with the Japanese army to carry on the revolutionary spirit, and vowing to protect the "Iron Blood Boys" team as they evacuated the secret camp. Under the double blow of extreme cold and brutal fighting, these heroes bravely fought to save the 13-year-old girl without fear of sacrifice, and ultimately died heroically.