In an abandoned utility room in the old city on a rainy night, gambler Chen Mo was stabbed to death. The fruit knife stuck in his chest and the marks of binding on his wrists indicated that this was by no means a simple vendetta. Lin Mo, the backbone of the criminal investigation team, was ordered to follow the clues of "gambling debt", only to find that the case had already jumped out of the framework of debt collection and murder - the missing half a million gambling funds, the mysterious scorpion tattoo, the ex-girlfriend behind the anonymous transfer, and a note saying "The debt owed to the third brother will be paid in the next life", leading the investigation into deeper darkness.
As underground casino owners and desperate debt collectors were arrested one after another, Chen Haonan, the leader of Jiangzhou's underground forces hidden behind the case, emerged, and his "protective umbrella" turned out to be Zhao Tiancheng, the chairman of the glamorous Dingsheng Group. A safe key connects evil transactions and power collusion. The criminal investigation team composed of Lin Mo, his hot-blooded deputy Zhao Lei, and technical expert Xiao Zhang works step by step on the edge of the confrontation between good and evil. They must not only solve the mystery of Chen Mo's money hiding, but also tear apart the huge black network that spans casinos, loan sharks, and corporate circles.
Every clue hides a trap, every witness has his own agenda, and human greed and cowardice are intertwined at the edge of the abyss. Lin Mo used calmness as a blade and justice as a shield to pursue the truth among the lies and sins nested in layers, but found that he had already been involved in a power game that was more terrifying than the murder. As the abyss stares back at him, can he split the darkness and let the silent dead echo?
