It all starts with a single dead person coming back to life. Within three days, the undead have taken over most of town. Despite heroic efforts and swift initiatives from the government, disaster keeps spiraling. Soon, the infection reaches the nation's borders, threatening to become a worldwide pandemic.

On a hot July day on the plains of Kansas, a US Army mechanized infantry company from the First Infantry Division gets a very vague warning order, and the young troopers saddle up on their steel beasts to go try to control "civil unrest".

The Scottish Highlands: a sparse, mountainous region some say was carved by the gods themselves. Few places are as untouched as this harsh, prehistoric landscape. It is no place for man. But nestled deep within the wilderness lies a cottage, and behind that cottage is a hill....

The world’s food supply grows aggressively, occupying every inch of earth, no matter how inhospitable. World hunger is averted. Humanity flourishes. RC-714 is digested, absorbed…and passed on. The Change affects small fast-breeding mammals first. They multiply with the same aggressive speed as the ExoGen plants, but an insatiable hunger drives them to violence. A war between species breaks out. When RC-714 reaches humanity, along with every other large creature on the planet, civilization implodes. 

Deep in the Congo Rainforest, a genetics research facility has gone dark. A partial distress call, sent moments before the blackout, indicates that something sinister has occurred. With research worth billions and secrets worth killing for, the notorious Lexington Corporation recruits Ziler and his team of mercenaries to investigate.

Katmai National Park: 7,000 square miles of rugged, isolated wilderness in southern Alaska. Vast stretches of frozen tundra, deep ancient forests, and impassable ravines ruled by the massive volcanic God, Devil's Desk. Despite the vigorous protests of Michael, the Talbots and the Tynes head to the park for a much-needed vacation away from it all.

Dr. Lauren Hale, a new hospital resident, is nearly killed by a raving mad emergency room patient, in a senseless, unprovoked attack. Officer David Olson, veteran cop and former Marine, returns from a father-son camping trip to discover that his ex-wife has vanished under bizarre circumstances, and his police department is on the verge of collapse. Jack and Emma Harper, a young, upwardly mobile couple, find their hip city neighborhood rapidly descending into madness.

If society fell apart, could your family survive? Jim Powell thought he was ready. He was a regular guy who travelled a lot for work and hated every second he was away from his young family. But when ISIS operatives unleashed a coordinated attack on America’s infrastructure, his entire world shattered. The electrical grid collapsed, communication networks were damaged, critical bridges and dams were destroyed, and major fuel refineries have gone up in massive fiery clouds.

Killing the sadistic warlord known as the Dog Tongue took everything Gus Berry had, including the woman he loved. Now, all he wants is to get away from the bloody scene of their final showdown. But when he heads west in a stolen truck, a brutal snowstorm forces him to turn back—and seek refuge in the Dog Tongue’s former headquarters. Though it’s littered with human carnage, the abandoned luxury hotel has a lot to offer a guy like Gus. But in addition to soft beds and working toilets, he encounters still-lurking dangers both living and undead.

Senior Chief Cotton Wiley thought he had left his days of fighting behind in Iraq and Afghanistan, but the world had other plans. First a deadly virus ravaged humanity and then the attempt at a vaccine turned most of the survivors into genetically engineered cannibals. Now the former SEAL has a new mission: Get his daughter through the wasteland of what was once America and to a place where she has a chance at a future not soaked in blood.