After Tang Axiang's case, Cui Tiejun, who had been away from the front line for many years, once again had the idea of returning to the front line.At this time, the bureau was preparing to launch a round of competition for detectives. Pan Jianghai persuaded Cui Tiejun to sign up, and the Three Old Boys regrouped.Cui Tiejun secretly received a competition application form, but his wife Zhang Hua discovered it and advised Cui Tiejun not to think about returning to the front line as a detective as soon as possible.Lawyer Zheng, a fellow student at Pan Jianghai University of Political Science and Law, found him.Lawyer Zheng is helping an agent sue the police station. Lawyer Zheng has his own Xiao Jiujiu and asks Pan Jianghai to help find the flaws in the police station, promising a large reward.Pan Jianghai was moved.A video of Xu Guozhu patrolling and enforcing the law was taken out of context and posted on the Internet, causing an uproar. However, Xu Guozhu was suspended from the police station, and the victim refused to give up.Pan Jianghai didn't know that Xu Guozhu was the policeman, so he also called Xu Guozhu to their celebration banquet.