1898, East Africa. The Tsavo man-eaters kill 130 people over the course of nine months. The unusually large, pale-coloured, and maneless male lions mark history in what became known as their reign of terror. Now, history is repeating itself. A new pride of killers has arrived in Tsavo, staking out their own bloody legacy. One that includes the murdered wife of conservationist and former hunter Thomas Walker.

Unsurpassed wilderness soon to become a battleground. A lone warrior has harnessed the raw, natural power of one of the greatest predators of all time. And the land to which he has kinship will no longer tolerate its desolation and decimation. War has been declared, and a zoological superweapon has been unleashed. As ranchers begin to lose their cattle, their lands, and their lives, a small community reaches out to the only person who can help: Thomas Walker, a hunter turned conservationist. He will soon discover that the creature is more familiar to him than he ever thought possible.

Deputy Thomas Rodney is no stranger to tense situations. Having served multiple tours in the worst of environments, facing death had practically become just another day at the office. But nothing could have prepared him for this. In a woodland county in the Pacific Northwest, a sinister presence has awakened. A roadwork crew has disappeared without a trace; a truck is found run off the road; a lakefront property is mysteriously vacant, its roof damaged as though something large descended from high above; and an eerie quiet has overtaken the countryside.

Something lurks in the darkness of the trees. A group of friends goes on a hike in search of an ancient spring deep inside the forest. Mythical stories come from the woods—tales of gnomes, fairies, and other not so benevolent creatures. Everything changes for the group when they run into a hiker that mysteriously vanished in the area weeks ago. She is malnourished, dehydrated, and hurt, but she keeps raving about the danger in the woods, repeating one incoherent word over and over in a foreign language.

Broke and desperate, paleontologist Grant Coleman gets the chance of a lifetime exploring a long-sealed cave, the fabled home of a gigantic creatures. NPS Ranger McKinley Stinson discovers a rancher’s prize bull has been butchered by an airborne killer, and tracks the blood trail back to the re-opened cavern. But as she’s about to arrest the trespassers, the unstable roof collapses, trapping all.