It tells the story of an interrogation accident that sent detective Cheng Bing of the Third Brigade to prison to serve his sentence. His teammates were implicated, dismissed from the police, and demoted. The former elite Third Brigade of the police fell apart. After ten years in prison, Cheng Bing regained his freedom. He lost everything, but Wang Da Yong, the suspect in the case, is still at large... Wearing a police uniform for a day brings justice for a lifetime. The Third Brigade needed to explain, but unwillingness turned into persistence. The sharp blade was unsheathed again. Cheng Bing and the brothers from the Third Brigade regrouped and embarked on the road to pursue the murderer. During the lonely and long journey, they cooperated with the police to chase the murderer for thousands of miles. In the process, we rediscover the meaning of life. Adapted from the non-fiction novel "Qing Zhuan Gao Ju Zhang, San Da Dui Ren Wu Wan Cheng Le" (请转告局长，三大队任务完成了) by Shen Lan (深蓝).