Everyone in Huahai City's underworld knows Lin Xiangyang: a gambling addict and lecher who collects protection money right outside the police station. He's a complete scumbag.
No one knows that Old Gao personally planted him as a deep-cover operative in the underworld.
But Old Gao is dead.
With his handler gone, Lin Xiangyang is a true lost soul. The underworld thinks he's a traitor, the police consider him expendable, and even He Lan, the policewoman he personally saved, eventually sends him to the detention center.
Retreat means death; advance, and he faces an even deeper abyss. The only thing he has left is the ability to see three to five seconds into the future.
With those few seconds, he must fight his way to survival between the worlds of law and crime.