When Royal Air Force pilot Lt. Kate Sinclair is shot down over Afghanistan, she finds refuge in an abandoned underground bunker where deadly man-made biological weapons – half human, half alien – are awakened.
The crypto-zoological agency Monarch faces off against a battery of god-sized monsters, including the mighty Godzilla, who collides with Mothra, Rodan, and his ultimate nemesis, the three-headed King Ghidorah.