The "anti-gang storm" swept Kuizhou after Luteng City. Just when the supervision team was stationed, Li Nanbei (played by Xiao Yang) and Yu Qing (played by Fan Chengcheng) unexpectedly captured the gang leader who had been on the run for many years. For a while, various forces were involved and pointed their spearheads at the Municipal Public Security Bureau led by Yu Hongbo (played by Li Chengru) and Duan Yi (played by Yu Ailei). The evil forces are "legally whitewashing" step by step, and the bizarre old cases have resurfaced. Well-known entrepreneurs and officials have been affected. The investigation process has gone through life and death, and the test for them has just begun.