In 1954, Godzilla, an ancient Apex predator, is lured to Bikini Atoll in Castle Bravo to kill him with a Nuclear weapon. In 1999, Monarch scientists Ishiro Serizawa and Vivienne Graham investigate a giant skeleton unearthed by a collapsed Uranium mining in the Philippines. They find two giant spores; 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 other technicians into the reactor. A tremor breaches the reactor, leaving Sandra and her team unable to escape while the plant collapses.
A crypto-zoological agency called Monarch faces off against a phalanx of monsters, including the mighty Godzilla, who collides with Mothra, Rodan, and his ultimate nemesis, the three-headed King Ghidorah. When these ancient super-species, which were thought to be mere myths, rise again, they all vie for supremacy, leaving all life on Earth hanging in the balance.
An ancient rivalry pits two legends against each other while a mission into uncharted terrain unearths clues to the Titans' very origins.
Following their explosive showdown, Godzilla and Kong must reunite against a colossal undiscovered threat hidden within our world, challenging their very existence – and our own.