Lin Qingshan, who had just graduated from the police academy, was assigned to serve as an intern at the traffic police brigade in his hometown county. An accident during a night-time drunk driving investigation led to a strange WeChat group on his phone - "Exchange Group for Famous Detectives from Ancient and Modern China and Foreign Countries". In the group, either the dead were resurrected or mental hospitals were connected to the Internet, until the leader of the group took out the first piece of evidence: [Holmes: I see this tire mark. The murderer is 1.8 Meters tall and left-handed.
From then on, all the unsolved cases and seemingly unexpected mysteries in the county gradually revealed their ferocious truths with the intervention of this young traffic policeman. Lin Qingshan originally wanted to keep his peace and issue a ticket, but this group of "group friends" forced him to become a legend.
