Walker (Tom Hardy) is a bruised detective fighting his way through the criminal underworld threatening to engulf his entire city. In the aftermath of a drug deal gone wrong, Walker finds himself with a number of factions on his tail; a vengeful crime syndicate, a crooked politician, as well as his fellow cops. When attempting to rescue the politician’s estranged son, whose involvement in the drug deal starts to unravel a deep web of corruption and conspiracy, he is forced to confront the demons of his past.