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A nuclear waste dump, located on a island
in the South Seas, is contaminating the nearby land,
causing abnormal mutations to affect local vegetation,
animals, and insect life. The company responsible for
the dump site also starts to clear-cut the land, turning
the once lush terrain into a barren wasteland. When
a typhoon strikes the island, a large landslide unearths
a mammoth egg that falls into the ocean and drifts off
toward Japan. Shortly afterwards, word of the large
egg approaching Japan starts flooding the media, and
several research teams are sent to the island in the
South Seas to investigate the giant egg's origin. Among
the research teams is a man by the name of Murakami,
who by chance stumbles upon a tiny woman living on the
island, who isn't even a foot in height. The small woman
introduces herself as Mana, and explains that the giant
egg that is drifting toward Japan belongs to Mothra,
and that his country will be in great danger if the
egg were to hatch near the main land. Murakami believes
her story, and agrees to help spread the word to avoid
such a disaster.
Meanwhile in Japan, before Murakami has
time to warn the authorities, the egg hatches. From
the egg a larval Mothra emerges, along with another
unrecognizable creature. This second monster is Gigamoth,
a Mothra mutated beyond recognition as a result of the
local radiation found on the island in the South Seas.
After hatching, Gigamoth quickly flees from the scene.
In hopes to prevent further disaster,
Murakami brings Mana to try and warn of the danger mankind
is in by the appearance of these two creatures. However,
upon arriving Mana is struck with a surge of psychic
energy, as the tiny woman realizes that Godzilla is
reacting to the nuclear fallout of Gigamoth. Her premonition
proves to be merited, as a report comes in that Gigamoth
has in fact engaged Godzilla near a nuclear power plant
in the Kanto area.
Mana, in an attempt to fend off Godzilla,
teleports herself inside Gigamoth's body, merging with
the monster in order to control it. Mana then commands
Gigamoth to emit an acidic mist, that corrodes everything
in the area as well as severally burning Godzilla's
skin. Gigamoth then encases the injured Godzilla inside
a cocoon, and shoves the creature into the sea. Gigamoth
then goes up to the nuclear power plant and encases
itself in a cocoon, as to draw energy from the power
plant while it transforms. At this point Mana severs
the link between them, just as the Self Defense Force
mobilizes a squad of new squad of masers, capable of
firing rays that freeze their target. The masers unleash
shot after shot at the cocoon, but the plan proves ineffective
as Gigamoth emerges from under the cocoon, and a sheath
of frost, in its adult form. However, the creature was
not given sufficient time to complete its metamorphosis,
and as a result its wings have not fully matured, making
flight impossible. This set back does not stop the creature
from converging on Tokyo, though. Meanwhile, in the
sea outside of the power plant, Godzilla's wounds have
healed, as the creature breaks free of the webbing that
encased it.
Later, Godzilla, after emerging from the
sea, confronts Gigamoth for the second time in Atami.
The King of the Monsters then fires his atomic ray at
Gigamoth, but the mutated insect is unfazed by the ray;
in fact, the creature's body sparks as Gigamoth absorbs
the nuclear energy and its wings fully mature. Gigamoth
then takes off into the sky, leaving behind Godzilla.
After witnessing the battle, Murakami
realizes that Gigamoth must have formed from an extreme
exposure to radiation, and believes that he could develop
an antibody bacteria that, hopefully, will separate
the radiation from the mutant bacteria in the cell structure
and neutralize Gigamoth's powers. Mana interrupts Murakami's
study, though, and merges Murakami with Mothra, while
simultaneously merging herself with Gigamoth. This fails,
however, as Mothra refuses to respond to any of Murakami
commands, and the two un-merge with the giant monsters.
Murakami then comes to terms with himself, and realizes
that he is falling in love with Mana, while he finishes
his antibody bacteria.
Meanwhile, in the Fuji area, Gigamoth
lays several giant eggs of its own. Shortly afterwards,
Godzilla appears, attracted by the Gigamoth's radioactivity,
and prepares to engage the giant insect once more. However,
before the creatures can fight, a fleet of jets appear
overhead and unload a payload of rockets, containing
Murakami's recently finished antibody bacteria, at the
two kaiju. Godzilla is unfazed by the rockets, but Gigamoth
is left weakened and very vulnerable by the bacteria
as Godzilla converges on his weakened prey. Suddenly,
Mothra arrives, in Imago form, to do battle with the
King of the Monsters, as she is merged with Mana. The
giant moth lets loose a wave of poisonous pollen that
paralyzes Godzilla, but not before he lets off a blast
of his atomic ray that strikes Mothra, and sends the
kaiju plummeting out of the sky. Mothra spies the weakened
Gigamoth below, as the two siblings make eye contact,
before Mothra steers itself toward Gigamoth and spears
itself onto Gigamoth's horn. Blood from Mothra begins
to pour out of the creature, drenching Gigamoth and
its eggs, causing both to dissolve. It's Mana's hope
that Mothra's body contains a small amount of mutant
bacteria and that the two insects might combine to form
a creature that is immune to the effects of Murakami's
antibody bacteria. The plan works, as the two are engulfed
by a glowing light, from which emerges Mothra's true
form.
Mana, after severing her link with the
giant moth, appears before Murakami, for the final time.
Murakami uses this opportunity to confess his love for
her, and asks that she let them both join with Mothra.
Mana refuses, but comforts him by telling him not to
worry, as he will meet someone like her very soon. Mana
then mergers with Mothra, once more, and proceeds to
cocoon Godzilla. Mothra then takes the cocoon and dives
into the sea, taking Godzilla with it.
Shortly afterwards a search of the ocean
is conducted, at which neither creature is found, and
both are presumed dead.
Months later, Murakami returns to the
South Seas' island where he first met Mana, hoping that
by some chance to find her again. While standing on
the beach, he sees a woman emerge from ocean, who looks
just like Mana. He approaches her to find out that she
is a research oceanographer. The two fall in love, as
Mana's prediction proves true. |