Qian Gui, a boy from a hospital in Shifang City, had kidney failure and had to find his biological father within 48 hours. The mysterious figure "Dragon in the sky" who has been on the edge of the law for three years, as well as the former maritime police officer Zheng Qianqian, is now the city public security criminal police to take over the matter. Their murky chivalry over the years has aroused the curiosity of Interpol and American psychologist Wendia who is on vacation in China. She used a trick to open the mouth of Qian Gui's adoptive father, Qian Shuangquan, and Qian Gui was not dumb. 16 years ago, Qian Gui's biological father ordered him to "handle" his newborn child. Relying on his conscience, he saved Qiangui, pretended to be stupid, sold garbage for a living, and raised the child. Qian Shuangquan handed a jade pendant to Long Zaitian. Eighteen years ago, when he was about to tell the secret, Qian Gui died of illness and Qian Shuangquan was hit and killed by a car. The clue is broken...There are various signs that Mei Qiuxue, the richest man in Shifang City, is the child's biological father. Zheng Qianqian investigated and collected evidence in various ways. He accidentally discovered that Mei Qiuxue might be the mastermind of the Mo family arson case 12 years ago, and Shifang City was going to investigate this person who had no money. Who is Qian Shuangquan? What accidental death? Why does Mei Qiuxue burn Mo's family? What is the relationship between Qiangui's biological father and fire? When everyone was at a loss, Mei Qiuxue was kidnapped... Ventia decided to use hypnosis to open up the memory of intermittent psychosis Mo Kexin and find a breakthrough for the truth. Unexpectedly, Mo Kexin, who was out of control, used a sharp knife to kill the benefactor who rescued her from the sea of flames, and was also the only insider in the sea of flames, invisible. In order to find out the case as soon as possible, Zheng Junlian joined the smile of Comrade Qi Hai of the Marine Corps, suppressing the pressure and obstruction of all parties, and getting things done. The elephant's invisible "Shifang City Economic Lifeline" was gradually surfaced by Wen Chenglin.