Evil Aliens from a distant asteroid invade the Earth to create half- human robots with synthetic blood and body parts Astro-Zombies! The soulless androids terrorize and indiscriminantly slaughter Earth's humans in a non-stop killing rampage. Key members of the U.S. presidential staff are kidnapped to electronically extract knowledge that will assist the space creatures in their diabolical quest. When a squad of advanced extra-terrestrial beings arrives to assist Earth's helpless population, they begin an all-out battle to destroy the evil alien forces.