"Once Upon a Time in Beihe Town" tells the story of Zhang Lijun, a young man from a small northern town in the 1990s who was humiliated by being laid off and gradually transformed from a boy running a stall to a gangster. He established "Bluestone Industry", colluded with officials, and monopolized the market until he was involved in drugs and murder, and lost himself in desire and violence. In the end, the protective umbrella shattered and the brothers died. After being rounded up by the police, he raised his hands and surrendered in the green gauze tent. After being tried and imprisoned for the rest of his life, he used twenty years in prison to atone for his sins, and his ashes were finally scattered into the Qingshi River. This is a profound past story about fall and redemption, sin, punishment and time.