An alien race is launching an insidious invasion - and it's up to two mere mortals to stop it! The terror begins in San Francisco, where one by one the residents suddenly lose their individuality and become drone-line shadows of their former selves. As the phenomena spreads, two Department of Health workers, Matthew (Sutherland) and Elizabeth (Adams), uncover the horrifying truth: mysterious pods are cloning humans - and destroying the originals! The unwordly invasion grows stronger with each passing minute, hurling Matthew and Elizabeth into a desperate race to save not only their own lives, but the future of the entire human race. The suspense, action and terror build with each twist and turn, escalating to a spellbinding climax that "literally chills the blood!"