The storyline of Save the Earth takes place two years after Godzilla: Destroy All Monsters Melee. The story involves mankind getting hold of Godzilla's DNA, known in the game as "G-Cells". The Vortaak learn of this, once again returning to Earth, controlling a vast army of monsters, including their ultimate weapon: SpaceGodzilla. The player faces down many controlled monsters in different locations. Source: Wikipedia, "http://en.wikipedia.org/wiki/Godzilla:_Save_the_Earth," available under the CC-BY-SA License.