Paul Williams is an ex SAS soldier who suffered physical and psychological injuries during an Afghanistan battle. After his wife Amanda leaves him, Williams begins a search to find and murder her. The army has trained him never to fail, never give up, and survive at all costs, and he is determined to succeed on his final, sacred mission. Using disguises, Williams passes for 'normal,' but he strikes ruthlessly when he finds any woman who resembles Amanda because he is incapable of mercy. Williams has quickly become the worst serial killer in the State's history, and Detective Inspector Dillon Bradley heads a task force to stop him. But Williams has his own agenda and intends to cause as much havoc as possible. He will succeed in locating Amanda or die trying and take as many police officers as possible with him.