Aliens from a dying world plot to conquer earth by preying on man's superstitions. Bringing two dead scientists back to life, they use their knowledge to re-animate various earth monsters, including the werewolf, Frankenstein's monster, the mummy Tao-Tet, and the vampire Count de Meirhoff.
Earth is invaded by an interstellar terrorist group, Big Fire (the Gargoyle Gang in the American version), led by Emperor Guillotine who spends most of his time in a multicolored space ship hidden at the bottom of Earth's ocean, from which he issues his orders. Big Fire is capturing scientists to create an army of monsters to conquer Earth. A boy named Daisaku Kusama (Johnny Sokko in the American version) and a young Unicorn agent named Jūrō Minami (Jerry Mano in the American version) are shipwrecked on an island after being attacked by a sea monster and subsequently captured by Big Fire. They flee to where a Pharaoh-like giant robot is being built by captive scientist Lucius Guardian, who gives Daisaku and Jūrō its control device. Guardian helps them escape before he is shot to death; before he dies, he triggers an atomic bomb which destroys the base. The radiation activates the robot, which now obeys only Daisaku.
After spending several months in an orbiting lab, three astronauts prepare to return to Earth only to find their de-orbit thrusters won't activate. After initially thinking they might have to abandon them in orbit, NASA decides to launch a daring rescue. Their plans are complicated by a hurricane headed towards the launch site—and a shrinking air supply in the astronauts' capsule.
Survivors of a sinking ship are rescued by Captain Nemo and his submarine crew. They are taken to an underwater city where they may spend the rest of their lives.
On the Moon in the year 2021, a former-astronaut-turned-salvager helps a millionaire space industrialist capture a 6000-ton sapphire asteroid, while also assisting a woman in finding her missing miner/prospector brother
Hubert de Tartas' life becomes a complete muddle when his wife's grandfather is unearthed after having spent 65 years in frozen hibernation in the polar circle. After being de-frosted, the Hibernating Man believes it is still the beginning of the century. Nothing is spared to keep that illusion alive. At the end of his rope, Hubert blurts out the truth and takes the man from Edwardian times on a crazy spree through an ultramodern Twentieth Century.
A turn of the century wild west show struggling to make a living in Mexico comes into the possession of a tiny prehistoric horse. This leads to an expedition to the Forbidden Valley where they discover living dinosaurs. They capture one and take it back to be put on display, leading to inevitable mayhem.
Given the chance to live in a simulated underwater home for a month, a scientist convinces his family to take advantage of the offer. Once the family agrees to move in, underwater mayhem occurs!
Blackmailing a young couple to assist with his horrific experiments the Baron, desperate for vital medical data, abducts a man from an insane asylum. On route the abductee dies and the Baron and his assistant transplant his brain into a corpse. The creature is tormented by a trapped soul in an alien shell and, after a visit to his wife who violently rejects his monstrous form, the creature wreaks his revenge on the perpetrator of his misery: Baron Frankenstein.
On an island somewhere in the Caribbean a professor is experimenting with mankind. Meanwhile, The Red Lips are moonlighting on a striptease world tour, but as soon as they hit the stage, the girls are up to their pasties in stiffs, Satanists and Sapphic sadists, all after the professor's secret formula for human clones!
A man who has a body almost completely covered in tattoos is searching for the woman who cursed him with the "skin illustrations". Each tattoo reveals a bizarre story, which is experienced by staring at the scene depicted. When the illustrated man meets a fellow tramp on the road a strange voyage begins.
Two young boys sneak aboard a spaceship and find themselves whisked away to the mysterious planet Terra. There, they encounter Gamera's old foe Gyaos and two female aliens with a taste for human brains. Gamera must save the children and battle the new monster Guiron, whose entire body is a deadly living weapon.
In the year 2012 historian Raimo Lappalainen wants to illustrate how life was 50 years earlier. He becomes obsessed with the fate of a 1970s nude model Saara Turunen, and finds a perfect actress to reconstruct her life and death in front of a TV camera. Meanwhile, a strike at a nuclear plant is covered up by the media.
The last seven survivors of a nuclear war barricade themselves against the outside world. Beyond a dense mist, other survivors, radiated and mutant, grow hungry.
A doctor kidnaps couples who are having sex and takes them to his mansion where they are being kept as prisoners. He injects his subjects with a substance to 'enhance' their sexual abilities. The curious doctor then forces the abducted people to have sex. While they are making love he drains a fluid from them. He needs this to prevent himself from being transformed into a monster. He gets his instructions from a talking brain.
A giant asteroid is heading toward Earth so some astronauts disembark from a nearby space station to blow it up. The mission is successful, and they return to the station unknowingly bringing back a gooey green substance that mutates into one-eyed tentacled monsters that feed off electricity. Soon the station is crawling with them, and people are being zapped left and right!
A group of military personnel transporting a hydrogen bomb are left to figure out how and why swarms of killer bugs took down their plane; the answer is more deliriously nihilistic, and convoluted, than they could imagine.