A young couple attempts to make their way to a rescue station during a worldwide crisis in which the dead return to life seeking living victims for sustenance. When they arrive, the shelter is being overrun by the undead and they seek refuge in a nearby abandoned house, and can only watch in horror as destruction and carnage ensue outside the windows... Low on food, water, and deprived of sleep, their grasp on sanity begins to slip away. But they have one small hope that may allow them to battle...