American television news reporter Dean Miller (Hugo Stiglitz) waits at a small European airport to interview a scientist about a recent nuclear accident. An unmarked Lockheed C-130 Hercules military plane makes an emergency landing. The plane doors open and dozens of armed and deformed men burst out and begin stabbing, slashing, hacking, and shooting the military personnel outside; they prove to be resistant to the most grievous bullet wounds and are relentless in their assault, stopping only to consume the blood of their victims. Miller flees from the airport back to the TV station where he works and tries to alert the public, but General Murchison of Civil Defense (Mel Ferrer) will not allow it. Miller tries to find his wife Anna (Laura Trotter), a doctor who works at a hospital, as the crazed assailants overrun the city, their ranks swollen by many of their former victims.