Evil aliens attack Earth and set their terrible "Plan 9" into action. As the aliens resurrect the dead of the Earth, the lives of the living are in danger.
In San Francisco, an amiable banker's seemingly perfect life is turned upside down when his deceitful fiancée embarks on an affair with his best friend.
Architect/vigilante Paul Kersey arrives back in New York City and is forcibly recruited by a crooked police chief to fight street crime caused by a large gang terrorizing the neighborhoods.