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.

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.

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

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.

A dormant volcano deep with the Turkish forest holds within it a deadly secret. Perfectly preserved, a nest of pterodactyl eggs are ready to hatch...

Following their explosive showdown, Godzilla and Kong must reunite against a colossal undiscovered threat hidden within our world, challenging their very existence – and our own.

A crack-pot scientist aligns with the Axis of Evil to bring down the United States with EMP blasts, toxic zombification gas and by unleashing the ultimate undead killing monstrosity: the Z-REX. When a hot-wired militia squad and a crew of college hipsters are thrown together to do something about it, chaotic Predator-Thunder action runs amok.

Journalists Ichiro Sakai and Junko cover the wreckage of a typhoon when an enormous egg is found and claimed by greedy entrepreneurs. Mothra's fairies arrive and are aided by the journalists in a plea for its return. As their requests are denied, Godzilla arises near Nagoya and the people of Infant Island must decide if they are willing to answer Japan's own pleas for help.

An expedition in the South Pacific lands on a tropical island where the natives worship the mysterious deity Gappa. An earthquake opens up an underground cavern and a baby reptile is discovered inside. The natives warn the foreigners to leave the hatching alone, but they don't listen and take it back to a zoo in Japan. Soon after, moma and papa Gappa start smashing Tokyo looking for their kidnapped child.

A paleontologist and her husband discover a mother and baby brontosaurus in Africa, and try to protect them from hunters who want to capture them.

Astronauts Glenn and Fuji investigate Planet X and encounter mysterious aliens known as the Xiliens, who ask Earth's people to help save their world from "Monster Zero". In exchange for borrowing Godzilla and Rodan, the Xiliens offer a cure for cancer. As Glenn investigates, he develops a romance with Miss Namikawa and uncovers the Xilien's true intentions.