Six teens on a quiet camping retreat are forced to fight for their lives after a mysterious virus transforms the local birds into monstrous flying predators capable of spreading a highly contagious plague and killing every human in their line of flight. Later escaping from the woods into a secure military bunker on the outskirts of town, the teens attempt to draw up a workable escape plan with the help of some scheming local survivors. But the birds have spread their virus throughout the nearby town, rendering escape without infection virtually impossible. Though they have enough supplies to stay safely put for the time being, it won't be long before a desperate situation calls for desperate measures, and the group must venture outside to confront a winged menace that may well be a flying harbinger of the apocalypse.
by Jason Buchanan synopsis