Across the vast universe, stars gleam in the darkness. On an abandoned planet, countless mechanical monsters of all shapes and sizes fight one another, where the strong prey on the weak. Ruins stretch as far as the eye can see. All kinds of plants have overgrown the abandoned cities. Yet a jungle seems to have been remarkably well preserved, lying north of a vast ruined city. Mechanical monsters of the water, land, and air grow more powerful, but seem all the more afraid to approach it. Deep within the jungle lies a small village several miles across, where humans still somehow survive.
This is where the story begins.