A writer witnesses the landing of two-dimensional alien warriors disguised as shadows. The writer escapes and warns the authorities in time for the shadow warriors to be uncovered and driven away.; A practical jokester tricks his friend into fleeing a haunted house only to be attacked by real ghosts. He promises never to play a prank again while his friend, actually a ghost, watches approvingly.; A burglar plans to steal the crown jewels and then use a time machine to escape into the past. Instead, he is stranded in a hideous alternate world with no human civilization.; Earth sends an expedition to the moon looking for a place to settle. They find a fertile valley and a robot left by the ancient empire of Atlantis to mark their claim to the moon.