Raniero Dorascenzi

A group of people are trapped in a West Berlin movie theater infested with ravenous demons who proceed to kill and possess the humans one-by-one, thereby multiplying their numbers.

After a nuclear war society breaks down into two groups, the evil Euraks, and the rebel Federation. A mercenary named Parsifal is hired by the Federation to infiltrate New York City, which is controlled by the Euraks, to rescue the only fertile woman left on Earth.