A series of violent undersea earthquakes are causing large amounts of underwater volcanoes to appear in the Pacific Ocean depths, and this prompts the Calico to investigate. Traveling inside one of the volcanoes, the crew is menaced by a herd of large fire breathing reptiles who appear to thrive on the molten lava within. Godzilla is called to free the crew from the volcano, but another earthquake opens a fissure in the Earth that traps the Kaiju King deep within the planet's crust undersea.
