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.
Fonda plays Ulee (short for Ulysses) Jackson, a Vietnam veteran, widower and grandfather. He is a beekeeper by profession, who raises two granddaughters (Biel and Zima) because his son (Wood) is in prison and his daughter-in-law Helen (Dunford), a drug addict, has run away. The son implores him to look for his wife and bring her home. Upon returning home with Helen, Ulee's granddaughters see their mother going through withdrawal, and the youngest pleads with their neighbor Connie (Richardson) to help her. Connie is a twice-divorced nurse who assists Ulee in getting his daughter-in-law through detox. The film shows Ulee holding the family together and attempting to protect them from two young criminals, associates of his son, who come looking for a hidden stash of cash.
One thousand years have passed since the Seven Days of Fire, an apocalyptic war that destroyed human civilization and gave birth to the vast Toxic Jungle, a forest swarming with giant mutant insects in which everything is lethal to humans. Scattered settlements exist wherever the Toxic Jungle relents, with the Valley of the Wind being one such settlement. The Valley's settlers have a prophecy about a saviour, "clothed in blue robes, descending onto a golden field, to join bonds with the great earth and guide the people to the pure lands at last".
Agnes White is a waitress at a gay bar living in a run-down motel in rural Oklahoma. Unable to move on from the disappearance of her son some years previously, she engages in drug and alcohol binges with her lesbian friend, R.C. Lately, she has been plagued by silent telephone calls that she believes are being made by her abusive ex-husband, Jerry Goss, who has recently been released from prison.
A group of soldiers led by Maj. Baker (Bradford Dillman) is ordered to investigate a basement level station which they believed was attacked. After Baker contacts his commander, Gen. Slater (Richard Widmark), they begin to investigate who drove a civilian van into the base. It is revealed to be owned by a scientist named Dr. Bradford Crane (Michael Caine), the only survivor of the attack. Slater orders two helicopters to check for a black mass (revealed to be bees), but the two helicopters are swarmed by the bees and crash, killing the pilots inside. Crane insists to Slater that the base was attacked by the same African killer bees that destroyed the helicopters. Helena Anderson (Katharine Ross), one of the base's doctors, supports Crane's story.
Penniless and straight out of the University of Iowa, Joe (Jerry O'Connell) moves to New York needing an apartment and a job. With the fortuitous death of Mrs. Grotowski, an artist named Walter Shit (Jim Turner) helps Joe to take over the last rent controlled apartment in a building slated for demolition. If Senator Dougherty (Robert Vaughn) can empty the building, he can make way for the prison he intends to build there, and uses thug Alberto Bianco (Don Ho) and his nephews, Vlad (Shiek Mahmud-Bey) and Jesus (Jim Sterling), to intimidate tenants.
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.
An earthquake releases a bunch of mutant cockroaches that can create fire by rubbing their cerci together. Eventually most of the bugs die because they cannot survive in the low air pressure on the Earth's surface, but a scientist Prof. James Parmiter (Dillman) keeps one alive in a pressure chamber. He successfully breeds the cockroach with a modern bug creating a breed of intelligent, flying super-bugs.
Police Detective Shindo (Yosuke Natsuki) is assigned to guard Princess Selina Salno of Selgina (Akiko Wakabayashi) during the Princess' visit to Japan, due to a suspected assassination plot. Although Shindo is smitten with Selina's photograph, her plane never makes it to Japan, as it is destroyed by a bomb en route. At exactly the same time a meteorite shower draws the attention of Professor Murai (Hiroshi Koizumi), who along with his team of scientists strikes out into the wilderness to examine the largest of the meteors, which has magnetic properties.
In Montreal, Quebec, scientist Andre Delambre (David Hedison) is found dead with his head and arm crushed in a hydraulic press. Although his wife Helene (Patricia Owens) confesses to the crime, she refuses to provide a motive and exhibits a number of strange behaviors. In particular, she is obsessed with flies, including a supposedly white-headed fly. Andre's brother, Francois (Vincent Price), lies and says he caught the white-headed fly; and, thinking he knows the truth, Helene explains the circumstances surrounding Andre's death.
After Yata (Toru Ibuki) is lost at sea, his brother Ryota (Toru Watanabe) steals a yacht with his two friends and a bank robber, the crew runs afoul of the giant lobster Ebirah, and washes up on the shore of an island, where a terrorist organization manufactures heavy water for their purposes, as well as a chemical that keeps Ebirah at bay. The organization, known as the Red Bamboo, has enslaved natives from Infant Island to help them, but the natives hope to awaken Mothra (now a full-grown moth metamorphosed from the larva that appeared in Ghidorah, the Three-Headed Monster) to rescue them.
A team of scientists are trying to perfect a weather-controlling system. Their efforts are hampered by the arrival of a nosy reporter and by the sudden presence of 2-meter tall giant praying mantises. The first test of the weather control system goes awry when the remote control for a radioactive balloon is jammed by an unexplained signal coming from the center of the island. The balloon detonates prematurely, creating a radioactive storm that causes the giant mantises to grow to enormous sizes. Investigating the mantises, which are named Kamacuras (Gimantis in the English-dubbed version), the scientists find the monstrous insects digging an egg out from under a pile of earth. The egg hatches, revealing a baby Godzilla. The scientists realize that the baby's telepathic cries for help were the cause of the interference that ruined their experiment. Shortly afterwards, Godzilla arrives on the island in response to the infant's cries, demolishing the scientist's base while rushing to defend the baby. Godzilla kills two of the Kamacuras during the battle while one manages to fly away to safety, Godzilla then adopts the baby.
Ichiro Miki (Tomonori Yazaki) is a highly imaginative but lonely latchkey kid growing up in urban (and at that time, polluted) Kawasaki. Every day he comes home to his family's empty apartment. His only friends are a toymaker named Shinpei Inami (Eisei Amamoto) and a young girl named Sachiko (Hidemi Ito). Every day after school, Ichiro is tormented by a gang of bullies led by a child named Sanko Gabara (Junichi Ito). To escape his loneliness, Ichiro sleeps and dreams about visiting Monster Island. During his visit he witnesses Godzilla battle three Kamacuras and Ebirah, a giant sea monster. Ichiro is then chased by a rogue Kamacuras and falls into a deep cave, but luckily avoids being caught by Kamacuras. Shortly afterwards, Ichiro is rescued from the cave by Godzilla's Son, Minilla. Ichiro quickly learns that Minilla has bully problems too, as he is bullied by a monstrous ogre known as Gabara.
In 1901, mail order bride Joanna (Eleanor Parker) arrives from New Orleans at a South American cocoa plantation to meet her new husband, plantation owner Christopher Leiningen (Charlton Heston), whom she has married by proxy.