Earth is an exploited and destroyed planet.
All were in upheavel. The Ceres wars, excessive environmental pollution, global warming and the contaminated radiation that enters through a perforated atmosphere, have turned this once blue planet into a grayish-brownish sphere of sludge. Earth is in, and has begun to search for a new home. Finally they make a strike in a distant part of space. In the course of various decades gigantic treks transport the majority of humanity to the planet Irata 3.