Lu Chenzhou, the criminal police captain who made a mistake in hunting down a fugitive and led to the death of his teammate, was transferred to the Archives Department and kept company with old case files all day long. New legal reporter Shen Xingyan tried to interview this former "star of the police" for a special feature, but was repeatedly rejected. A series of murders broke out in the city, and the crime tactics were a perfect replica of the unsolved "Rainy Night Butcher" case twenty years ago. Under pressure, the police brass appointed Lu Chenzhou, who was familiar with the old case, as a special adviser, and asked Shen Xingyan to accompany the team for "positive reporting." The two had to form a temporary partner. In the process of chasing the murderer, they discovered that all the clues vaguely pointed to Lin Xiao, Lu Chenzhou's teammate who died in the line of duty. As the investigation deepens, a huge conspiracy related to the bottom line of law enforcement, personal grudges and redemption has emerged. In the final showdown, Lu Chenzhou must choose between procedural justice and revenge lynching, while Shen Xingyan must decide whether to reveal the entire cruel truth or protect everyone's last vestige of faith.
