An ancient rivalry is rekindled when a Hollow Earth scholar receives private funding and wants to use Kong to discover the origin of the Titans. Protected inside a biodome since his discovery in the 70s, Kong was the only kaiju who did not participate in the epic battle against King Gidorah, and Godzilla is determined to become the final apex predator. Meanwhile, the humans begin to suspect that everyone involved is being manipulated by an industry...

While investigating his mother's death in 1999 at a nuclear power plant, Ford Brody, discovers a conspiracy to hide the fact that giant monsters exist. But it doesn't take long for the world to also find out, as a "Massive Unidentified Terrestrial Organism" attacks Hawaii and Godzilla turns up. Ford, a U.S. Navy officer who works with bomb disposal, helps the military to use warheads to defeat the monsters.