At the end of the smoke and flames.

In July 1937, the situation in North China was urgent, and the Japanese army was preparing to launch a full-scale invasion of China. The Heishizhai in Chahar Province seemed calm, but in reality, turbulent currents were surging underneath. Just before the famous talented man Zhang Songling was to marry his beloved, he was cruelly betrayed by traitors, leading to the destruction of his family. Heartbroken and pained, Zhang Songling resolutely enlisted in the army. After enduring several tough battles, his military skills rapidly improved, and he came to understand that a soldier's responsibility is to protect the people. Later, Zhang Songling was severely wounded and, after much hardship, found himself in the grasslands, where he joined a guerrilla unit led by the Communist Party, uniting the people of the grasslands to resist the Japanese invaders. Zhang Songling witnessed the sincerity and selflessness of the Communist Party, realizing that it was truly the hope for China. He proudly joined the Communist Party of China, becoming the leader of the guerrilla unit and a key figure in the red anti-Japanese armed forces. Zhang Songling led his troops and united the people to outsmart and outfight the invaders and traitors, undeterred by difficulties and making great sacrifices, ultimately succeeding in driving the invaders out of the grasslands.