<P> In 1999, Monarch scientists Ishiro Serizawa and Vivienne Graham investigate a colossal skeleton underground that was unearthed by a collapsed mine in the Philippines . They find two giant spores in the cave; one dormant and one hatched with a trail that leads out of the cave to the sea . In Japan, the Janjira Nuclear Power Plant experiences unusual seismic activity; Supervisor Joe Brody sends his wife Sandra with a team of other technicians into the reactor . A tremor breaches the reactor, leaving Sandra and her team unable to escape while the plant collapses . </P> <P> Fifteen years later in 2014, Joe's son Ford, a U.S. Navy explosive ordnance disposal officer, returns from a tour of duty to his wife Elle and young son Sam in San Francisco but has to immediately depart for Japan after Joe is detained for trespassing in the Janjira quarantine zone . Joe is determined to find out the cause of the Janjira meltdown, and he persuades Ford to accompany him to their old home in the quarantine zone to retrieve vital data while discovering that the zone is not contaminated by radiation . They successfully retrieve the data but are discovered by soldiers and taken to a secret facility in the power plant's ruins . After several power failures, a giant winged creature emerges and escapes, destroying the facility . Joe is severely wounded and dies as he and Ford are taken by helicopter to the U.S.S. Saratoga . The incident is reported around the world as an earthquake . </P> <P> Serizawa, Graham, and Ford join a U.S. Navy task force led by Admiral William Stenz to search for the creature, called a "MUTO" (Massive Unidentified Terrestrial Organism). Serizawa and Graham reveal to Ford that a 1954 deep sea expedition triggered the appearance of Godzilla and nuclear tests in the 1950s were really attempts to kill him . Project Monarch was established to secretly study Godzilla and other similar creatures such as the MUTO, which travelled from the Philippine mine to Janjira and caused the meltdown, and how they are connected with each other . Ford reveals that Joe had monitored echolocation signals that indicated the MUTO was communicating with something . </P> <P> The MUTO attacks a Russian submarine and drops it on land in Hawaii to eat the sub's nuclear material . Godzilla arrives, causing a tsunami in Honolulu and briefly engages the MUTO in battle, until it flees . Meanwhile, a second, larger, wingless MUTO emerges from the other spore in Nevada and devastates Las Vegas . The scientists deduce that the second MUTO is female, the female was the one the male was communicating with, and that the two MUTOs will meet to breed in San Francisco . As Godzilla is hunting them, they will lure him there . Over the scientists' objections concerning the monsters' radioactive nature, Stenz approves a plan to use nuclear warheads to lure the monsters to the open ocean and destroy them, with more power in the warheads than the power in the bomb used on Godzilla in 1954 . Ford returns to the U.S. and ends up joining the team delivering the warheads by train, but the female MUTO intercepts the train and devours most of the warheads . The single remaining warhead is airlifted with Ford to San Francisco and is activated after a confrontation between the military and Godzilla at the Golden Gate Bridge, but the male MUTO steals it and takes it to the female, who forms a nest around it in the Chinatown area . </P>

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