Le policier Mark Corley est avec son fils Trent dans le métro et assiste à l'invasion de Los Angeles par des extra-terrestres. Audrey, la conductrice de métro reçoit un message l'avertissant de ne pas regarder une lumière bleue. Or Trent, ignorant ce message l'a vu et est hypnotisé. C'est l'intervention de son père qui l'a retenu de toutes ses forces, l'empêchant ainsi d'être aspiré contrairement aux autres personnes qui ont regardées cette lumière. Mark aide ensuite un petit groupe de survivants à quitter la ville envahie par les extra-terrestres mais au cours de leur périple ils sont capturés et enfermés à bord d'un vaisseau spatial alien. Séparé du groupe de survivants, Mark rencontre un extra-terrestre différent des autres, celui-ci se bat du côté des humains qui est en fait Jarrod du film précédent. Mark rencontre ensuite Elaine, la femme de Jarrod, enceinte et sur le point d'accoucher, il l'aide à faire naître leur enfant qui s'avère être une petite fille qui grandit très vite et se révèle avoir des dons. Mark retrouve ensuite son fils qui se fait décerveler par des tentacules hostiles afin de devenir un soldat extra-terrestre, la conductrice de métro et l'aveugle noir et ensemble ils se battent tous contre le chef des aliens. Au cours de la bagarre, l'astronef finit par échouer au Laos. L'aveugle noir succombe à ses blessures tandis que Mark et la conductrice de métro qui tient dans ses bras la petite fille rencontrent deux asiatiques, Sua et Kanya. Ces derniers, un frère et une sœur qui appartiennent au triangle d'or, s'aident mutuellement pour combattre la menace extraterrestre. Ils se réfugient dans un temple bouddhiste où Mark, Audrey et la jeune fille rencontrent un scientifique du nom de Harper. Celui-ci a trouvé un remède contre les effets de la lumière hypnotique dans le sang de la jeune fille. Avec ce remède versé dans une seringue, Mark s'infiltre dans le vaisseau extra-terrestre et parvient à l'injecter dans une bombe extraterrestre qui rend la conscience à tous les humains qui ont été transformés en alien et tue le chef des envahisseurs. Dix ans plus tard, le bébé qui est devenu adulte est à la tête de la résistance humaine, traquant les extra-terrestres jusqu'au confins de l'univers pour les éliminer.
William Dudley (Leslie Nielsen) is a corrupt mayor of a nameless Midwestern U.S. city who has allowed an oil refinery to be built right in the center of town, far from any river, lake or reservoir. On one typical hot summer day, Herman Stover (Jonathan Welsh), a dangerously disturbed employee at the works has been denied an expected promotion and in addition, finds himself fired. He then decides to take his revenge against the works by opening the valves to the storage vats and their interconnecting pipes, flooding the area and sewers with gasoline and chemicals. It doesn't take long for this act of petty vandalism to start a fire, which starts a chain reaction that causes massive explosions at the refinery, destroying it and spreading a mushroom-cloud of flame that soon engulfs the entire metropolis. The drama focuses on a newly built hospital which, like the refinery and all civic buildings that went up during the mayor's crooked administration, is shoddily built and poorly equipped where the head doctor, Frank Whitman (Barry Newman), and his staff treat thousands of casualties from the fire while the city fire chief Risley (Henry Fonda) keeps in constant contact with the fire companies fighting a losing battle against the fires, and Maggie Grayson (Ava Gardner), an alcoholic reporter, sees it as her chance to make it nationwide with her coverage of the story of the "city on fire".
An enigmatic swordsman named Nomad (Patrick Swayze), wanders through the desert in a post-World War III world. He searches for his mentor's killer, the assassin Sho (Christopher Neame). The war itself is never described, but there are hints that a new government rose soon afterwards, though it has lost power since.
An atomic war has seemingly destroyed most (if not all) human civilization, leaving Earth contaminated with radioactive fallout. The apparent single exception is a box canyon, surrounded by lead-bearing cliffs, in which former Navy Commander Jim Maddison lives with daughter Louise (Lori Nelson) in a home stocked with supplies anticipating just such a holocaust. Louise is engaged to be married, but her fiance is missing.
As nuclear explosions ravage New York City, residents of an apartment block rush downstairs to escape from the building, only to be forced into the basement by further explosions. Only eight of the residents – Eva (Lauren German) and her boyfriend Sam (Iván González), Josh (Milo Ventimiglia) and his brother Adrien (Ashton Holmes), Josh's friend Bobby (Michael Eklund), Marilyn (Rosanna Arquette) and her daughter Wendi (Abbey Thickson), and Devlin (Courtney B. Vance) – manage to force their way into the building's bomb shelter before the superintendent, Mickey (Michael Biehn), seals the door. The group acclimatises to the cramped surroundings while Mickey asserts his dominance over the shelter and its denizens, much to the chagrin of Josh, Bobby, and Devlin. After some time, the shelter's door is broken open and the shelter is invaded by armed soldiers in biohazard suits; the men's speech is unintelligible and their allegiance remains ambiguous. The men attack the group and seize Wendi, leaving the shelter with her. Devlin and Mickey manage to kill three of the men and Mickey takes a rifle. Josh volunteers to use one of the dead soldier's suits to leave the shelter and search for Wendi.
The film follows two stories, one about the civilians trying to stay alive during the disaster, having to battle both "the crazies" as well as U.S. soldiers ordered to shoot on sight. The other involves the political and military leaders trying to contain the epidemic.
Four couples gather for a regular brunch which, over the years, has devolved into a gathering fraught with tension and awkwardness. One guest is meeting the others for the first time, on his third date with the host's sister. As they settle into the afternoon (awaiting an "always late" fifth couple), they get to know the new member of the group and catch up on old times. When the men excuse themselves to watch football, they discover the TV, Internet and landline phones are down. When the host accuses his wife of not paying the bills, their upcoming divorce is revealed to the guests.
Three travelers, Gringo, Ariel, and Pollo travel through Chile. They party in a club and meet three young women, sisters Monica and Kylie, and their Russian friend Irina. The two groups pair up and decide to travel down to Valparaiso together.
The Soviet Union has dissolved into what is now Russia. Out of chaos comes a mysterious virus that eventually kills everyone who is exposed to it. The virus eventually reaches the United States through Boston, and the city is quarantined. A wall is built, cutting Boston off from the "mainland." All foreign immigrants are barred from entering the US since they may be carriers of the virus. The only people allowed out of the city are those with special passports, only available to those working with a government agency or through the black market.
It's the story of two mothers Maryam (Mahnoor Baloch) and Lea (Dendrie Taylor), grieving over their dead teenage sons and then begin to wonder if the other's son wasn't responsible for their child's death.
Corbett stars as Matt Andrews, a geologist who is asked to investigate why there have been two large sinkholes affecting the city of New Orleans. Jessica Steen plays his girlfriend Allison Beauchamp, assistant to the Mayor, who has to decide whether the problems with the sinkholes will spread far enough to require that the remainder of Mardi Gras be cancelled, which would be an economic disaster to the city.
Off the coast of Alaska, oceanographer Emma MacNeil (Deborah Gibson) is studying the migration patterns of whales aboard an experimental submarine she took without permission from her employer. Meanwhile, a military helicopter drops experimental sonar transmitters into the water, causing a pod of whales to go out of control and start ramming a nearby glacier. In the chaos, the helicopter crashes into the glacier, and the combined damage breaks the glacier open, thawing two hibernating, prehistoric creatures. MacNeil narrowly avoids destruction as, unknown to her, a giant shark and octopus are freed. Some time later, a drilling platform off the coast of Japan is attacked by the octopus, which has tentacles large enough to wrap around the entire structure. After returning to Point Dume, California, MacNeil investigates the corpse of a beached whale covered with many bloody wounds. Her employer Dick Richie (Mark Hengst) believes them to be from a tanker propeller, but MacNeil insists they appear to be from a creature. Later, she extracts what appears to be a shark’s tooth from one of the wounds. Elsewhere, the huge shark leaps tens of thousands of feet into the air from the ocean and attacks a commercial aircraft, forcing it to crash into the water.
As a passenger ship sails by the bleak ruins of a deserted island, Dr. Kersaint (Thomas Mitchell) blows his former home a kiss. When a fellow passenger asks him about the place, he tells its tragic story, segueing into a flashback.
Aloma and Prince Tanoa, are promised by the islanders to wed from their childhood, though the two despise each other and fight. Tanoa is sent to the United States for an education and does not return for 15 years after the death of his father. Once crowned, Tanoa's treacherous cousin Revo who has plotted to rule in place of Tanoa since childhood, sees his chance by arming himself and his band with rifles and a light machine gun.
Une jeune femme, Miss Dorothy Gibson, relate à ses parents et à son fiancé, un marin, son aventure à bord du Titanic lors de son naufrage. Le naufrage est représenté au travers de flashbacks, de façon très romancée. Finalement, son père accepte son mariage.