The narcotics of Pingluo County's Captain Qin Changling escorted "Bang Zi" who had just been caught selling drugs back to the team, to interrogate him for the drug lord Ma Hongwu's hideout. After a fierce gun battle, Ma Hongwu was captured. During the interrogation process, Ma Hongwu, in order for a bail out for medical treatment, did not hesitate to lacerate himself. Just then, Qin Changling's daughter is kidnapped. Faced with the threat of the criminals, Qin Changling did not retreat at all, but captured the criminals; and Ma Hongwu, who was in the hospital, took the opportunity to escape with the help of his accomplices. Qin Changling, with deep remorse, reflected upon his negligence to the bureau's leadership. At this time, the drug dealer planted evidence against Qin Changling causing Qin Changling to be suspended from his job for investigation. Qin Changling knew that he was the only one who understood Ma Hongwu's way of thinking and course of action, so he went to Ma Hongwu's hometown alone and carried out a journey of 10,000 miles to pursue the murderer. With the assistance of the local public security authorities, Qin Changling successfully captured the two drug lords and weeded out a pest for the people....