The United States of America is falling before the armies of the dead. Leading the sole survivors of the US Army's 10th Mountain Division out of the overrun city of New York, Captain Phil Hastings heads for the safety of Fort Indiantown Gap, a National Guard training facility deep in the woodlands of Pennsylvania. Joining with other remnants of the military, government, and civilian communities, Hastings and his men must try to keep the tsunami of corpses from taking over the world and plan the resurrection of the nation. But first, they have to outlast the ravages of the dead... ...and the living.