The mysterious trail of mangled human corpses is only the bloody beginning for the secret terror buried beneath a condemned Parisian church. Suddenly unleashed for their subterranean crypt - and very much alive - the ancient, winged creatures have risen on a mission of destruction. What's happening is not just a killing spree. It's Judgment Day! Now only a small band of mere mortals, including an American professor (Eric Balfour), are destined to battle the most deadly evil of all.