Synopsis：Nan'ao, a coastal city where neon lights conceal violent undercurrents. Passionate officer Zheng Yi watches his partner Zhang Mingzhi die while covering for him. The corrupt police department instead frames Zhang as the mole. With his beliefs shattered, Zheng Yi leaves the force and takes violent revenge on drug lord Qian Jiu. Just as he is about to kill his enemy, he discovers that Zhang Mingzhi never died: he had long been bought off by Qian Jiu and faked his death to escape. Once sworn brothers, they are now separated by a chasm of betrayal. Hunted by drug lords, abandoned by the police, and devastated by the brutal death of a loved one, the estranged brothers are forced to set aside their feud. Using their battered bodies as blades, they launch a tragic counterattack against the darkness, redeeming loyalty and brotherhood with their lives and tearing open the drug web shrouding Nan'ao.