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.

Showcases 3 major events during World War 2 involving both the Europeans & Pacific conflicts. The Raids to destroy Nazi Germany's heavy water production based in Norway, plus the final desperate act to deny them what had already been stockpiled. The Japanese midget submarines role and participation in the attack on Pearl Harbor, December 7, 1941. What they achieved plus what was their ultimate fate. The attacks on United States warships in the Pacific late in World War 2 by the Japanese Kamikaze and Okha Squadrons. The Kamikaze attacks were in whatever planes the Japanese forces were able to gather. The Okha attacks were made in specially built flying bombs that were towed by larger and usually slower aircraft that were not suitable for fighter work.

Chris Kody, imprisoned member of the US military, is released from prison and reunited with his old team in order to pursue a renegade scientist. The catch, the scientist has developed mind control technology that can make even your friends into heartless killers.

Milquetoast Henry Limpet experiences his fondest wish and is transformed into a fish. As a talking fish he assists the US Navy in hunting German submarines during World War II.

A submarine expedition to salvage the remains of Mechagodzilla is thwarted by a massive dinosaur named Titanosaurus. An Interpol investigation leads biologist Ichinose to uncover the work of Dr. Mafune and his mysterious daughter Katsura. Aligned with the Black Hole Aliens, Katsura's life becomes entwined with the resurrected machine.

Captain Nemo goes even deeper into insanity in this mesmerizing fantasy tale. Once again at the helm of his fearsome, wildly advanced vessel, the nautical madman endeavors to turn the world above the waves upside down.

An experimental submarine with a very experienced crew, the "Siren II" is sent to find out what happened to the "Siren I" after it mysteriously disappeared in a submarine rift. Things go awry when they begin to find things that shouldn't be there...

A British spy ship has sunk and on board was a hi-tech encryption device. James Bond is sent to find the device that holds British launching instructions before the enemy Soviets get to it first.

Near the end of WWII a lone U-Boat is sent from Germany to Japan carrying plutonium needed for a Japanese A-Bomb. During the long journey, news arrives on the radio that Hitler killed himself and Germany has surrendered. This causes a rift in the crew, the Nazi Party members wanting to continue to Japan since they are still at war, while the others just want to surrender or return home.

Russian and British submarines with nuclear missiles on board both vanish from sight without a trace. England and Russia both blame each other as James Bond tries to solve the riddle of the disappearing ships. But the KGB also has an agent on the case.

Told in flashback, Out of the Depths strives to explain why its four male protagonists are bobbing around the Pacific in a lifeboat. The story proper begins as Captain Faversham (Jim Bannon) and his crew embark upon a secret mission which takes them into Japanese waters. The plan is to prevent a kamikaze attack against the American invading forces. Compelling in itself, the plotline isn't improved by arbitrary doses of misfire pathos and comedy relief. One of the sailors is played by Ken Curtis, later to gain TV fame as Festus on Gunsmoke.

Based on true events, an American submarine collides into a Soviet sub of the coast of America and an ensuing standoff occurs that could lead to total annihilation.