The world has come to an end. The dead have risen to devour the living. Mike and Jen find themselves trapped in their home with two neighbors, teenaged children. Staff Sergeant Brown finds himself leading a squad of National Guard troopers in the Government's first attempt to control the outbreak. He soon finds himself and two of his troopers separated from their unit. Staff Sergeant Brown again finds himself leading not only soldiers, but also an ever increasing number of civilians as they attempt to escape from the never ending masses of undead. After a helicopter rescue results in tragedy, he leads them out of the city. How long can he keep the rag-tag group of survivors alive in this world over-run by a new APEX predator?