In the summer of 1997, Jiangcheng detective Lin Xiao was ordered to infiltrate the transnational drug cartel run by Uncle Long, the leading drug lord on China's southeastern coast. To earn their trust, he had to sink deeper and deeper into darkness: enforce the family's rules with his own hands, take part in drug deals, and watch a brother die to protect him. More perilous still, his wife, policewoman Su Wanting, approached Uncle Long to assist the operation, only to discover that he was the man who had changed her fate years ago. Old feelings rekindled under the barrel of a gun.
The cartel's second-in-command, Chen Qingzhi, was the brother Lin Xiao trusted most in the darkness, and his most dangerous enemy in the light. Chen Qingzhi's true identity was that of an undercover agent sent by another System.
When the two discovered each other's hidden cards, a game of loyalty and betrayal began. Would they join forces to break the deadlock, or destroy each other? When Su Wanting became pregnant, even she did not know who the father was. In this hell of endless deception, no one could walk away with their hands clean.
