The Return of Godzilla (1984)

.A Japanese fishing vessel, the Yahata Maru no. 5, is trying to find its way to shore in a fierce storm while near an uninhabited island, when a giant monster appears and attacks the boat. The next morning, reporter Goro Maki finds the vessel intact but deserted. As he explores the vessel, Goro finds all the crew dead with their bodily fluids seemingly drained except for one young man called Hiroshi Okumura, who has been badly wounded. Suddenly a giant sea louse attacks Goro but is eventually killed when Hiroshi regains consciousness and stabs it with a hatchet, saving Goro's life.

In Tokyo, Okumura is kept isolated in a hospital room and meets with Dr. Makoto Hayashida, who presents him with pictures of Godzilla attacking Tokyo from back in 1954. From looking at the pictures, Okumura confirms that the monster he saw was Godzilla. The news of Godzilla's return is kept secret by the Japanese government to avoid panic until Godzilla attacks a second time and destroys a Soviet nuclear submarine. However, the Russians believe the attack was orchestrated by the Americans, and a diplomatic crisis ensues which threatens to escalate into nuclear war. The Japanese intervene and finally announce that Godzilla was behind the attack. The Japanese arrange a meeting with the Russian and American ambassadors and, after some debate over the issue, Prime Minister Mitamura decides nuclear weapons will not be used on Godzilla even if he were to attack the Japanese mainland, an announcement that both the Americans and Russians are upset with. The JSDF are put on alert and begin to search for Godzilla. Meanwhile, the Russians have their own plans to counter the threat posed by Godzilla, and a Russian control ship disguised as a freighter called the Balashevo in Tokyo Harbor is outfitted to launch a nuclear missile from one of their orbiting satellites should Godzilla attack. Kashirin, the colonel in charge of the ship, reluctantly orders the nuclear device to be disarmed, as the Soviet government ultimately agrees with the Prime Minister's demands.

Soon, Godzilla appears on an island off the coast of Japan, determined to feed off a nuclear power plant in the outskirts of Mihama. When Godzilla attacks the facility near Mihama and feeds off the reactor, he is distracted by a flock of birds, and leaves the facility almost as quickly as he arrived. After some research, Hayashida determines that like birds, Godzilla follows the Earth's magnetic field in order to navigate, and that he can be lured to any location using a magnetic transmitter. Hayashida forms a plan to construct a transmitter and lure Godzilla to Mount Mihara on Oshima Island, where he will be trapped in the volcano's crater with a controlled eruption.

Godzilla is later sighted at Tokyo Bay, forcing mass evacuations out of the city and a state of emergency is declared. The JSDF attacks Godzilla with fighter jets, but their missiles are useless against him. Godzilla then proceeds to the coast, where the waiting military forces, equipped with tanks, rocket launchers, ground-to-ground missiles and infantry, proceed to fire on Godzilla, but they are quickly obliterated with a single blast of Godzilla's atomic breath. As Godzilla climbs ashore, he causes the Balashevo to crash into the shore and capsize, damaging its systems and causing the nuclear missile to launch. The ship's captain, Colonel Kashirin, bravely attempts to disarm the missile but is killed by a small explosion before he can do so. Godzilla then proceeds towards Tokyo's business district, wreaking havoc along the way. There, he is confronted by two N1-00s and the Super X, a piloted craft armed with cadmium weapons constructed in secret to defend Tokyo in case of emergency, in particular a nuclear attack.

Godzilla has a bad reaction to the cadmium shells that are fired into his mouth by the Super X, and falls down unconscious. Unfortunately, the city is faced with a greater threat when the countdown ends and the Russian missile is launched from the satellite, leaving the Japanese government and people helpless to stop it. However, the Americans intervene and shoot down the missile with one of their own before it can hit Tokyo. However, the atmospheric nuclear blast creates a radioactive electrical storm, which revives Godzilla once more.

Godzilla has a final battle with the Super X, eventually damaging the aircraft and forcing it to make an emergency landing where he destroys it by toppling a building on it. Godzilla continues his rampage until Professor Hayashida arrives on Oshima Island and activates his magnetic transmitter, which gets Godzilla's attention. Godzilla leaves Tokyo and swims across the ocean to volcanic Mt. Mihara, where he notices the signal device, which fascinates him. As he walks towards it, he falls into the mouth of the volcano where he is surrounded by bombs. Okumura detonates the charges and causes a volcanic eruption. Godzilla roars as the ground beneath him crumbles and he falls into the volcano's crater, his fate unknown.