decheng, the southern metropolis, is a city full of sins. on this day, inspector gongsun ze (played by wang kai) of the police station received a preview letter for the death of "blue xinren". he hurriedly took people to the preview location. zhao xiaoman fell from the sky and died in front of the police. forensic hu xueli (played by zhang li) suspected of committing suicide, but prosecutor bao zheng (played by zhang duo) asserted that it was murder. at this time, chen shimei (played by liu mu), the son-in-law of the "jiangnan ship king", was bombed and killed again. qin xiaolian (played by liu yuxin), who came to decheng to find her husband, became a suspect. the antique shop has a murder case, and bao zheng, gongsun ze and agent zhan chao (played by hu yuwei) have made every effort to solve it. a strange thing has not yet been resolved. yang yang, the newly born son of decheng speaker zhao xun (played by gao shuguang), was stolen by someone in the hospital with a dead cat. after many aspects of dealing with it, the shocking conspiracy of an illegal pharmaceutical group was cracked. .....