In the 1940s, Chengdu. Zheng Xiaonan, a college student, was a passionate young man who witnessed the death of innocent people in the bombing of Japanese planes. Under the influence of his classmates who were Communist Party members in college, he gave up his pen and joined the army and devoted himself to the battlefield. In a fierce battle with the Japanese army, the Sichuan Army squad was wiped out. Zheng Xiaonan was rescued by the Eighth Route Army and became one of them. In this melting pot, he honed his will, strengthened his faith, and grew into a Communist Party member. During the War of Liberation, Zheng Xiaonan returned to the Sichuan Army and returned to Chengdu with the mission of the party, and a battle of wits and courage began. With the identity of an anti-Japanese hero, he instigated the generals to revolt and protect progressive people. At a critical juncture, he successfully resolved the crisis, disintegrated the enemy's conspiracy, and contributed his youth and blood to the peaceful liberation of Chengdu. At dawn, the People's Liberation Army entered the city. Zheng Xiaonan completed his mission and gained love.