Governments across the globe have failed to stop the spread of the Oni Agent. The biological weapon continues to wreak havoc. Those that are infected become abominations known as Skulls, a fate worse than death. Captain Dominic Holland and Meredith Webb have made it to Fort Detrick. The Army base was once a bastion for America's biodefense. Now, swarms of hungry Skulls prowl outside the walls.

Congo already faced the extreme ravages of war before the outbreak. Deep within the militia-controlled jungles, Captain Dominic Holland and his covert group, the Hunters, follow a lead in a desperate race to uncover who is responsible for the biological weapon turning humans into the monsters known as Skulls. But what they uncover may be far more dangerous and frightening than they ever expected. Back in the US, a lost member of Dom's team faces a relentless tide of Skulls alone. The fate of the Hunters and their mission may rest in his hands.

Captain Dominic Holland's greatest weapon against the apocalypse is his ship. The Huntress is the heart of Dom's scientific research and military operations. And it has been taken. Dom must embark on a perilous mission to retake it if he stands any chance at finding the cure the world so desperately needs. Dom's daughter, Kara, is stranded in the middle of Skull-infested Virginia. While she and a few others struggle to reunite with Dom and the Hunters, enemies more terrifying and ruthless than the Skulls emerge.

Captain Dominic Holland and his group of covert operatives are charged with uncovering the whereabouts of the fleet and stopping them before they reach land. On a mission that takes them around the crumbling strongholds of Europe, they uncover a plot more sinister than they could have possibly imagined. With few resources and little time, Dom and his Hunters put their lives on the line to save the world from utter destruction. But even that may not be enough. 

A fanatical organization led by a rogue Russian biowarfare expert continues to expand its arsenal of biological weapons. Each design is more diabolical than the last. Now, the group plans to launch a new airborne agent that will destroy every last pocket of humanity eking out an existence in this horror-filled world. Captain Dominic Holland and his team of elite covert mercenaries are assigned to stop the launch of this terrifying new weapon. In a desperate race against time, they must navigate the treacherous waters and cities around Europe to save humanity.