Kiryu is undergoing repair modifications after its battle with Godzilla. Prime Minister Hayato Igarashi accepts Lead Scientist Yoshito Chujo's choice to replace the Absolute Zero Cannon with a powerful Tri-Maser.
Endless warfare and environmental pollution have resulted in the frequent appearance of monsters. The Earth Defense Force (EDF) is established. Mutant humans with extraordinary physical capabilities are discovered and are organized into an EDF troop called the M-Organization. Their main opponent is Godzilla, first sighted in 1954. After repeated battles, Godzilla is captured in a crevasse at the South Pole and buried under an avalanche of ice. The EDF ship Gotengo, commanded by Captain Gordon, battles and destroys Manda but in the process, the ship is wrecked and Gordon is dismissed from the EDF. At M headquarters, mutants Ozaki and Kazama spar before their next mission.
Amidst a storm, a boat is being piloted across the South China Sea by John Finnegan (Treat Williams). With him are his crewmen Joey "Tooch" Pantucci (Kevin J. O'Connor) and Joey's girlfriend Leila (Una Damon). Finnegan has been hired to transport a group of mercenaries, led by a man named Hanover (Wes Studi), to an undisclosed location in the middle of the ocean.
The prologue of the film acknowledges the events of the first Godzilla film, while inventing its own timeline, explaining that the capital of Japan was moved from Tokyo to Osaka. The film takes place in an alternate universe with advanced technology, explaining that in 1966, Godzilla attacks the first Japanese nuclear plant in Tokai, Ibaraki Prefecture. After this, a section of Japanese Self Defence Force was dedicated to fight Godzilla, and was called G-Graspers. In 1996, clean plasma energy replaced nuclear energy, however this did not deter Godzilla from attacking. Plasma energy is also banned, due to the fact that Godzilla attacked the original plasma energy reactor.
In 1992, journalist Kenichiro Terasawa (Kosuke Toyohara) is writing a book about Godzilla and learns about a group of Japanese soldiers stationed on Lagos Island in the South Pacific during World War II. They were unintentionally saved from a group of American soldiers by a mysterious dinosaur known as "Godzillasaurus" in February 1944. In 1954, the island was destroyed by a hydrogen bomb test and the radiation from the bomb mutated the dinosaur into Godzilla.
The film begins with a new beginning similar to the first film. Ash Williams and his girlfriend, Linda, take a romantic vacation to a seemingly abandoned cabin in the woods. While there, Ash plays a tape recorder from the cabin's previous inhabitant Professor Knowby. The tape features Knowby reciting passages from the Necronomicon Ex-Mortis (or Book of the Dead), which he has discovered during an archaeological dig. However, the recorded incantation unleashes an evil force which kills and later possesses Linda, forcing Ash to decapitate his girlfriend with a shovel when she attacks him, he then buries her.
In New York Harbor, Carl Denham, famous for making wildlife films in remote and exotic locations, charters Captain Englehorn's ship Venture for his new project, but he is unable to secure an actress for a female role he reluctantly added. Denham searches the streets of New York for a suitable woman. He meets penniless Ann Darrow and convinces her to join him for the adventure of a lifetime. The Venture quickly gets underway. The surly first mate, Jack Driscoll, gradually falls in love with Ann. After weeks of secrecy, Denham finally tells Englehorn and Driscoll that their destination is Skull Island, an uncharted island shown on a map in Denham's possession. Denham speaks of something monstrous there, a legendary entity known only as "Kong".
News reporter Ichiro Sakai and photographer Junko Nakanishi take pictures of a wreckage caused by a typhoon. They uncover a strange, bluish-gray object in the debris, not knowing its significance. Later that day, a giant egg is discovered on the shore. The local villagers salvage it, and an entrepreneur of Happy Enterprises named Kumayama buys the egg from the local villagers. Instead of letting scientists study the egg, Kumayama wants to make it into a large tourist attraction. Later, Sakai and Nakanishi are informed that the strange object they found is extremely radioactive. (It is later hinted that this is a skin particle from Godzilla.
En Chine, un groupe de scientifiques découvre la momie d'un empereur chinois datant de 200 avant J.C. dans une tombe se trouvant dans un labyrinthe d'une caverne truffée de pièges mortels. Mais leur découverte libère accidentellement une horde d'araignées mangeuses d'hommes. Pour atteindre la sortie, ils vont devoir lutter contre ses arachnides sanguinaires.
In the aftermath of Godzilla's attack on Tokyo and his later imprisonment at Mt. Mihara. a team of scientists discovers cells left in the rubble by the monster and collects them. A group of American militants takes a sample of their own. They attempt to escape with them, but are killed by a lone assassin codenamed SSS9, who steals the sample and departs. He boards a cruise liner and heads to the Republic of Saradia to deliver the cells to the Saradia Institute of Technology and Science. The president of the institute wants to use the cells to merge with genetically modified plants, hoping to transform Saradia's deserts to vast greenery and end the country's dependence on oil wells for wealth. Dr. Genshiro Shiragami and his daughter, Erika, are enlisted to aid with the ambitious project. However, a terrorist bombing destroys the institute's laboratory, ruining the cells and killing Erika.
A teenage girl purchases a baby American alligator while on vacation with her family at a tourist trap in Florida. After the family returns home to Chicago, the alligator, named Ramón by the girl, is promptly flushed down the family's toilet by her surly, animal-phobic father and ends up in the city's sewers.
Far north of the Arctic Circle, a nuclear bomb test, dubbed "Operation Experiment", is conducted. Prophetically, right after the blast, physicist Thomas Nesbitt (Paul Christian) muses, "What the cumulative effects of all these atomic explosions and tests will be, only time will tell." No sooner said, the explosion awakens a 30-foot (10 m) tall, 100-foot (30 m) long carnivorous animal known as Rhedosaurus, thawing it out of the ice where it had been held in suspended animation. Nesbitt is the only witness to the beast's awakening and is later dismissed out-of-hand as being delirious at the time of his "sighting". Despite the skepticism he persists, knowing what he saw.
King Kong, after being shot down from the World Trade Center, is kept alive in a coma for about 10 years at the Atlanta Institute, under the care of surgeon Dr. Amy Franklin (Linda Hamilton). In order to save Kong's life, Dr. Franklin must perform a heart transplant and give Kong a computer-monitored artificial heart. However, he lost so much blood that a transfusion is badly needed, and to complicate matters, Franklin says there no species of ape or other animal whose blood type matches Kong's. Enter adventurer Hank "Mitch" Mitchell (Brian Kerwin), who captures a giant female gorilla, who is dubbed "Lady Kong"; in Borneo (Mitchell theorizes that Borneo and the island from the first movie were once part of the same landmass), bringing her to the Institute so her blood can be used for Kong's operation. The transfusion and the heart transplant are a success, but Kong escapes along with the female.
College film student and aspiring film writer Maggie Butler (Jill Schoelen) has been having recurring dreams of a young girl named Sarah who is caught in a fire and being chased by a strange man who is trying to kill her. She records what she remembers on an audio tape and plans on making the story into a film. Maggie lives with her mother Suzanne (Dee Wallace Stone), who has been receiving strange, demonic prank calls recently. On her way to class, a boy she has been seeing named Mark (Derek Rydall) embraces her and tries to get her go to his place. Maggie shuns his advances, explaining that she can't be distracted from writing her script.