On the eve of an invasion by a soulless army of aliens known as the Zeravire, the enigmatic billionaire known as Sandman gathers the world's leaders at his castle to unveil the ultimate weapon that is Earth's last hope, a gravity-powered god of circuits and steel known as Gravion!

When mankind faces an alien force with technology light years ahead of its own, will they be enough to save the Earth from destruction? The fate of humanity rests in the hands of the mysterious billionaire Sandman and a young band of orphaned misfits. Sandman's units control the Gravion, a robotic deity forged of circuits and steel. But can his erstwhile pilots stop fighting amongst themselves long enough to fight the Zeravire?

Effeminate Heroes! Giant Fighting Robots! Gravity-defying Breasts! Sandman and his ragtag crew of misfits and loners are back at it again, saving the earth from the deadly Zeravire invasion... only this time, they won't be the only ones on duty! Enter the elite G-Soldier Squadron, the first unit of the government's attempt to mass-produce Gravion technology. Led by ace pilot Faye, will the G-Soldiers push the Earthgertz gang out of a job?

There's a new player in the game of Earth Defense. Enter the elite G-Soldier Squadron, the first of the government's attempts to mass-produce Gravion technology. Led by ace pilot Faye, will the G-Soldiers push the Earthgertz gang out of a job?