The story tells that Zheng Lusheng, the director of the Huxiao Town Police Station, is about to be transferred back to the Municipal Bureau. The Bureau arranges Wu Di, who is experienced in handling cases but strict in law enforcement, to replace Zheng Lusheng. Facing the problems exposed during the social transformation period, Zheng Lusheng and Wu Di carry out legal education to resolve the contradictions and disputes among the villagers, so that Huxiao Town can move forward firmly on the road of the rule of law.