Eight hundred meters in radius

The story focuses on the mining area of Fengyang Town in the late 1990s. The appearance of an unknown female body broke the surface calm, and the illegal drug trafficking network in the town came to light. Police officer Chen Hongbing (played by Ding Yongdai) follows the clues closely, but gradually approaches his biological son Chen Hui (played by Xu Kai). In a small world with a radius of 800 meters, the confrontation between father and son, the entanglement of responsibility and family affection, the entanglement of law and human nature, make the family and the small town face the choice and test of good and evil.