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.