It is adapted from the real-life case of Zhang Baolin, a notorious gang leader in Shijiazhuang. The story centers on a shooting incident in the Fanguang Alley area of ​​Hengzhou City. During the investigation, Deputy Chief Xu Guoqing discovers that the victim, Wu Tian, ​​has a highly complex background. Although the police successfully arrest some members of the gang involved, the ringleader, Liu Huaqiang, remains at large. Following Wu Tian's murder, Li Li—the head of a local real estate company—is gripped by panic; she attempts to flee the dangerous area with her younger sister, Li Mei, but Li Mei refuses to leave. Meanwhile, even as the police investigation faces numerous obstacles, Liu Huaqiang continues his criminal activities and plots further offenses. Thus, an intense game of cat-and-mouse—a clash of police pursuit and vengeful retribution—unfolds across the city.

海南强戒所所长陈旭，临危受命，将五位一体精神戒毒救治新模式在实践中运用，挽救了长期沉湎于毒品、被毒品深度坑害的“老烟枪”，使他们中的绝大多数人消除了毒瘾和心瘾，重拾生活的信念，重归正常生活的轨道。