A small group of cosmic explorers, including a woman, leaves Earth to start a new civilization. They do not realize that within themselves they carry the end of their own dream. They die one by one, while their children revert to a primitive native culture, creating new myths and a new god.

With the cyclotram, an atomic-powered rock-boring vehicle, Dr. Jerimiah Morley leads an expedition into a subterranean world.

During World War I, a German U-boat sinks a British passenger ship and takes the survivors aboard. After getting lost in fog, the submarine surfaces near the unknown island of Caprona, a lost world where they find dinosaurs and Neanderthals.

The first manned expedition to Mars is invaded by an unknown life form, which stows away on the rescue ship.

After losing his parents, a priest travels to China, where he inherits a mysterious ability to turn into a dinosaur. At first horrified by this new power, a prostitute convinces him to fight crime. And ninjas.

In the future, two slaves in a distant galaxy escape prison and crash-land on a strange planet. They meet Zed, whose hospitality attempts to hide the fact they are to be hunted for sport. Armed only with knives and their wits, the girls must battle their way across the jungle to a hidden arms cache before Zed catches and kills them.

Army experimentation with transporter devices accidentally turns people into alligators.

Major Ben McBride organizes a mission to the Antarctic wastes to search for his friend who has been missing in the region for several years. McBride's party find themselves in a world populated by primitive warriors and terrifying prehistoric creatures, all of whom they must evade in order to get back safely

An alien from planet Davanna, whose population has developed a terminal blood disease caused by nuclear radiation, is sent to Earth to acquire fresh human blood for his people.

A spaceship is sent to Mars after an alien distress signal is picked up. They find one survivor, but when a crew member is found drained of blood it's evident they have rescued a bloodsucking monster. Uses footage from Encounter in Space (1963).

When a man-eating cave creature appears with a fortune in uncut diamonds around his neck, Dr Chambers' daughter Denae hires adventurers C and C Salvage to find the underground source of the gems.

After an asteroid draws an astronaut and his ship to its surface, he is miniaturized by the phantom planet's exotic atmosphere.