On the eve of D-Day, American paratroopers drop behind enemy lines to penetrate the walls of a fortified church and destroy a radio transmitter. As the soldiers approach their target, they soon begin to realize that there's more going on in the Nazi-occupied village than a simple military operation. Making their way to an underground lab, the outnumbered men stumble upon a sinister experiment that forces them into a vicious battle against an army of the undead.