Tom Campbell, a London Special Constable, is on patrol near a jewellery shop. Men are burgling the shop and Tom is struck down by their getaway driver before he can stop them. Running to what appears to be a police box to call for backup, Tom enters TARDIS, a time machine operated by its pilot, Dr. Who, with his niece Louise and his granddaughter Susan.
Julio (Julian Villagran) wakes up one morning in an apartment, unable to remember what happened the night before. He barely has a chance to speak to the girl he spent the previous evening with, Julia (Michelle Jenner), when it becomes clear there is an alien spacecraft hanging over the city.
The Helios 7 space probe is sent on a mission to study the planet Jupiter. While on its outward journey to the gas giant, the probe is overtaken by the Space Amoeba, an amorphous parasitic extraterrestrial. The probe returns to Earth and crashes into the South Pacific, where the Amoeba leaves the device and inhabits the body of a cuttlefish, causing it to mutate into what is called "Gezora." The tentacled kaiju begins attacking ships and islands in the area.
Unaccountable, deadly malfunctions begin occurring at a top-secret government facility under the New Mexico desert where a space station is being constructed. Agents from the Office of Scientific Investigation (OSI) in Washington, D.C. are called in to investigate.
An outer-space terrorist from a planet named Arous - a brain-shaped creature named Gor - arrives on Earth and possesses young scientist Steve March. Gor then proceeds to use his vast, destructive powers to bend the world to his will, threatening to wipe out the capital city of any nation that defies him.
The actions once again take place in the small French town of Saint-Tropez. While driving with one of his gendarmes, Cruchot (Louis de Funes) has to stop in order to fix the car. The gendarme wanders away and sees a flying saucer in a field which then flies away. He tries to tell Cruchot and the rest of the station, but they don't believe him. Shortly after, the same occurs with Cruchot and the chief of the gendarmes. This time it is Cruchot who wanders away and sees the saucer, however the chief does not believe him. Later on, when the same gendarme is doing paperwork in the office, a young man appears in front of him and says that he is a part of an alien expedition which has arrived to Saint-Tropez in order to examine humanity as people from all around the globe go to Saint-Tropez during the summer. The alien demonstrates its shapeshifting ability by transforming into the same gendarme it is talking to. The gendarme runs and tells Cruchot, who doesn't believe him. In the midst of the racket, the chief comes and sends the gendarme away. The chief reveals that he is actually an alien disguised as the chief, and when Cruchot doesn't believe him the alien becomes agitated and uses laser vision to cause damage to Cruchot's room. He relents when a watch on his hand flashes red and drinks something out of a flask. The alien begins coughing and upon hitting it on the back, Cruchot discovers it makes a metallic sound. Later on when the real chief arrives, Cruchot stabs him with a screwdriver thinking that it is the alien. The chief orders Cruchot out, since the supervisor will come in tomorrow to check up on the station. During the check up, Cruchot notices the same watch on the supervisor as on the alien he saw last night and attempts to attack him. The gendarmes hold him back while the alien supervisor flees, and the real supervisor arrive. Cruchot once again stabs the real supervisor thinking he is an alien. He is arrested, but escapes the station.
A huge, blinking flying saucer that's approaching the Earth emits a glowing object. This object races ahead of it to intercept a man who's driving down a lonely road. It takes over the man's body and directs him to Central Labs, a U.S. research facility that's been tracking the saucer (supposing it to be an asteroid).
Young newlywed Marge Farrell (Gloria Talbott) notices that her new husband Bill (Tom Tryon) is acting oddly: He doesn't show any signs of affection towards her or anything else, including his pet dogs, which he used to love. Marge is also very concerned because she cannot become pregnant.
Dans la campagne de Morino, un paysan est témoin de l’atterrissage forcé d'un vaisseau spatial dans un champ. Suite à une mauvaise manœuvre, des extra-terrestres ont dû se poser sur la Terre. Le professeur de physique Solmi, accompagné de sa fille Luisa, son gendre, quelques techniciens et d'espions orientaux, se rend sur le lieu du crash. Au fond du gouffre, le groupe d'humains découvre un astronef et ils sont aussitôt pris en otages par Kaena, le cheffe des aliens, qui les force à le réparer. Une fois chose faite, le vaisseau redécolle avec à son bord les terriens kidnappés par Kaena et les extra-terrestres. Leur destination n'est d'autre que leur planète Hydra.
Air Japan flight JA307 is en route from Tokyo to Osaka. As stewardess Kuzumi Asakura (Tomomi Sato) announces the flight plan, the crew and passengers notice unusual signs around them.
A group of pilots in the Canadian wilderness begin to hear strange reports over their radios about planes crashing, cars stalling, and a deadly plague which has gripped the planet. As the plot continues, it's clear that Earth is in the midst of an invasion. The pilots barracade themselves in a cabin in the woods and wait for impending doom.
Un vaisseau spatial s'écrase sur la Terre. A l'intérieur de celui-ci, plusieurs aliens s'échappent. Ils répandent la terreur autour de la petite ville de Perry Hill...
When five Manhattan women are accosted under mysterious circumstances, the police think they have got a twisted serial rapist on their hands. But as Detective Dale Androtti (Lance Lewman) and Dr. Gamble Pace (Teresa Farley) soon discover, the reality is much worse. Tracing the source of the attacks underground, they find an unstoppable alien presence that has infested an abandoned subway system and begun to reproduce itself by impregnating human women.
Tony Mareda, Jr., a former Olympic athlete turned world's greatest private detective, is driving across the country when he is attacked by mobsters. Chased to the sleepy backwater town of Beamsville, Tony ducks into the local drive-in theater, where he is followed by his pursuers. As Tony hunts down and dispatches the hit men amidst the parked cars, a pink meteor roars overhead and crashes in the nearby woods, causing the townspeople to rush out of the theater to look for it. As the young couples search the woods, however, the women begin to hear a ringing sound coming from the glowing pink rock that turns them into lusty nymphomaniacs.