In the year 3250 A.D., the alien tyrant Lod takes control of the population of the planet Moog and makes them into his human “robots.” Lod eventually grows bored of living amongst “robots” so he mentally probes interstellar space and finds the beautiful Ona Gorn on Earth; determined to make her his bride, Lod teleports Ona to his world. But Ona’s boyfriend Paul Rale learns of her abduction; Paul flies in a spaceship to Moog and incites the human “robots” to revolt against Lod’s tyranny and rescues Ona.