Can the cowardly man who killed the deputy director's wife truly reach the top of his life? Can Xiao Gang, who occupies the magpie's nest, thrive in a chaotic shopping mall? How should Xiao Gang release his personality that has been suppressed for more than ten years and how should he get rid of charges and suspicions? Will he become a serial killer? Cleverly destroying corpses and eliminating traces, how did the clever police catch Xiao Gang's fox tail? Who is the bad guy? Can bad guys really be brought to justice?