In the 1970s, three children lived in the old Beijing Hutong, Wang David, Li Hongbing, and Su Moli. They were childhood sweethearts and grew up together. While they are growing up, the society changes dramatically around them. David inherited his father's business in the restaurant, but because he cannot make egg fried rice, he could only do some cleaning work. Hongbing and Moli fell in love, but eventually broke up. Hongbin went out to explore the world; Moli, who was pregnant, was unwilling to accept David who loved her, and turned to go south to pursue her dream of becoming a star.

Set in the wake of the July 7th Incident in 1937, the film captures the nationwide surge of resistance against the Japanese invasion. The town of Sanyuan in northern Weihe becomes a key gathering point for anti-Japanese armed forces. Inspired by real historical merchants from Sanyuan, the story follows figures like Yuan Xihe, who embody the grief and patriotism of the local people. They send their sons to the battlefield and sacrifice their fortunes to support the resistance. Under the leadership of the Communist Party, the people of Sanyuan stand united in the national struggle, embodying resilience, sacrifice, and courage in the face of national crisis.

Near retirement, grassroots judge Gu Chengshan discovers a flaw in a case he ruled. Refusing “mechanical justice,” he pushes for a retrial to correct the verdict and protect fairness.

The legendary Soul-Guiding Lantern, said to hold the secret of immortality, tears the Tianfeng Sect apart with Hua Qiansheng leaving the sect. Twenty years later, Tao Yun saves Yue Luoxi, whose awakening becomes the key to the lantern’s power. As Hua Qiansheng returns and the past resurfaces, Yue Luoxi is drawn into the long-buried feud and faces him in a final battle among the ruins of the fallen sect—where destiny, ambition, and the price of immortality collide.