The Robot Monster has been sent to Earth as the advance party of an impending invasion. Ordered by The Great One to capture several humans, the Robot Monster becomes confused once it learns more about humans. Written by Murray Chapman Ro-Man, an alien that looks remarkably like a gorilla in a diving helmet, has destroyed all but six people on the planet Earth. He spends the entire film trying to finish off these survivors, but complications arise when he falls for the young woman in the group. Love that bubble machine! Written by Ray Hamel