Natori Yoshida, a young man seeking vengeance for his father's death, meets with G-Force to discuss a weapon he is creating to finally kill Godzilla: The Oxygen Destroyer. Unbeknownst to them, Godzilla is on the verge of a meltdown, an event with cataclysmic results. To make matters worse, Spikesaurus, a monster as old as Godzilla, returns to wreck havoc on Japan. G-Force Captain Yukijiro Nakamura is forced to make a controversial decision: to not engage the monsters until G-Force has needed weapons. With Godzilla's temperature ever rising, Spikesaurus' resurgence, and the lack of necessary weapons, the fate of the world has never been more uncertain...