Godzilla and Mothra arrive to Antarctica just as King Ghidorah finally awakens. As all three fight, the Monarch agents venture inside the destroyed cavern to rescue Serizawa while the G-Force ambush Conrad and the mercenaries. At some point in the battle, Rodan joins in to help.



Conrad and his mercenaries kill the G-Force, and retreat to never be seen again. Mothra struggles in fighting King Ghidorah, who eventually shoots gravity beams to blow her up. Rodan immediately intercepts and takes the hit, both falling to the ground.



Godzilla and Ghidorah shuffle it out. Showing an ability to control the weather, King Ghidorah strikes down lightning and succeeds in paralyzing Godzilla. Suddenly, the dying Rodan begins flying towards Godzilla, and transfers his life force onto him. Now more unstoppable than before, Godzilla fights Ghidorah once more on top of icebergs, and destroys him with a high-powered red spiral atomic ray.



When everything seems resolved, the U.N. orders the nuclear strike, forcing the Monarch agents to leave the area. The H-bomb is locked onto the monsters’ current position, with the blast radius too big for the humans to escape. Mothra, aware of what’s happening, says farewell to Madison and flies off to intercept the bomb while the survivors fly off from the blast.



In the aftermath, new glaciers are formed but the bodies of Godzilla and Mothra are nowhere to be found. The media celebrates the victory of the heroic monsters but many mourn their deaths, especially Madison. Mark and Emma get together again to help her cope through that loss.



Chen and Serizawa meet with the U.N. to discuss the whereabouts of James Conrad, to which they all conclude on a new destination to Skull Island. The film ends in Antarctica where the submarine USS Scorpion gets trapped in an iceberg, only to find Godzilla encrusted in ice next to it. With the ice breaking apart and loudly, the final shot is a close up of his eye opening.