Dave takes on a final mission-kill Walt Freeman and save the Russian girl. Looking for revenge, Dave Pulaski heads to Los Angeles. He's hell-bent on killing the man responsible for the zombie experiment that turned Tres Marias into a charnel house. But the mission goes sideways when a Russian girl named Sasha escapes a secret medical facility run by Walt. Despite his thirst for vengeance, Dave decides to help her. Now a ruthless, ex-military sociopath working for Walt is after them. Meanwhile, scientifically engineered mutants who flay their victims alive are running rampant across the city. Chances are good that Dave will die before he can complete his mission. For Dave, revenge is a powerful narcotic. How deep into the darkness is he willing to go?