Three earthlings visit the planet Mongo to thwart the evil schemes of Emperor Ming the Merciless.

Richard Grant, imprisoned in India for a crime he did not commit, escapes and makes his way to Africa.

A young alien falls for a pretty teenage Earth girl and they team up to try to stop the plans of his invading cohorts, who intend to use Earth as a food-breeding ground for giant lobsters from their planet.

Commando Cody, 'Sky Marshal of the Universe', works with American scientists Joan Gilbert and Ted Richards in the development of a flying suit and a rocket to the Moon. When the nation's defences are being sabotaged and destroyed, Cody learns that an atomic-gun is being used and that the men on the moon are the culprits.

Bugs is the test rabbit shot to the moon. There, he meets Commander X-2, who is intent on destroying the Earth with his Aludium Q-36 Explosive Space Modulator.