An unidentified paramilitary force seizes an aerospace compound, takes hostages, and issues no demands. Special Forces are sent in and go silent seconds after an eerie signal cuts across their radio frequencies. When the interference clears, the entire team has been wiped out. A classified strike unit built for exactly this kind of situation is dispatched with one set of orders: eliminate the intruders at any cost, find the source of the signal, and contain whatever is spreading beyond the compound.