A team of scientists on a remote island in the South Seas, Sollgel, are conducting weather experiments to address global population growth, but their efforts inadvertently create giant mutated mantises, Kamacuras. A reporter, Goro Maki, discovers the island and its inhabitants, including a castaway woman named Saeko, and witnesses the monstrous mantises grow even larger.

Son of Godzilla
A journalist uncovers a mysterious research project on a tropical island, where they encounter massive praying mantis, a stranded woman, and a terrifying infant that Godzilla adopts as his own.