When most of the residents of Piedmont are dead after the return the head of this US Air Force's Project Scoop declares an emergency. A group of eminent scientists led by Dr. Jeremy Stone scramble into some laboratory and try to first isolate the life form when discovering why two different people from Piedmont - an old alcoholic and also a six-month-old baby - lived. The boffins study the life form that is alien unaware it has already mutated and presents a threat at the laboratory, which has a atomic self-destruct device made to prevent the escape of dangerous biological agents. .