Apelike aliens build a robotic Godzilla to destroy Japan, and the true Godzilla may not be powerful enough to destroy it.

Seven segments related to one another only in that they all purport to be based on sections of the book by David Reuben...

An eccentric professor invents wacky machinery, but can't seem to make ends meet. When he invents a revolutionary car, a foreign government becomes interested in it, and resorts to skulduggery to get their hands on it.

In the far future, a highly sexual woman is tasked with finding and stopping the evil Durand-Durand. Along the way she encounters various unusual people.

When scientists use eco-terrorism to impose their will on the world by affecting extremes in the weather, Intelligence Chief Cramden calls in top agent Derek Flint.

Caveman Tumak is banished from his savage tribe. He finds a brief home among a group of gentle seacoast...

Jason has been prophesied to take the throne of Thessaly. When he saves Pelias from drowning, but does not recognize him as the man who had earlier killed his father, Pelias tells Jason to travel to Colchis to find the Golden Fleece. Jason follows his advice and assembles a sailing crew of the finest men in Greece, including Hercules. They are under the protection of Hera, queen of the gods. Their voyage is replete with battles against harpies, a giant bronze Talos, a hydra, and an animated skeleton army, all brought to life by the special effects wizardry of Ray Harryhausen.