The movie then tracks back forty hours earlier, showing a woman named Brooke jogging in the woods.
Elsewhere, a small group of military men set up a mobile missile launcher on the side of a hill.
Brooke returns home and meets with her parents, while Max heads back to the sheriff's office.
One of the firefighters discovers a piece of satellite wreckage with an odd green ooze attached to it and picks it up; later he is shown becoming ill. That evening Brooke's friend Karen and her boyfriend Chad are spending an evening together when Karen's daughter becomes frightened by a bloodied man walking in their yard.
A preliminary autopsy performed by Davidson, who is also the town's physician, determines that Chad was killed and eaten by more than one human.
Brooke rides her bike home from town and discovers a horde of bloodied strangers attacking her family.
Max encounters the infected at a campsite and is forced to abandon his patrol car and walk back to the sheriff's office.
Brooke stumbles across the military man in the hazard suit shown in the beginning and together they make it back to the armored vehicles.
Brooke finds the cruiser and gets inside, where Max confesses his love for her and shows her an engagement ring he bought for her.
[3] Reel Advice wrote "there's no denying that what will be presented here is easily one of the most bombastic, exciting, and often scary zombie films that has been put up in some time.
The deputy especially is played by a compelling actor who raises the films credibility level...While it kinda pissed me off, it also managed to hold my interest, with the action sequences providing good, solid entertainment."