Centuries of negligence have left the Earth corrupted beyond repair, its resources exhausted, its ecosystems destroyed by the civilization that depended on them. In the wake of this failure, a small robot named Orb has been assigned a task that should be impossible: purify the planet and give the species that ruined it a second chance. Orb must travel to one of four corrupted locations, find the source of contamination, and eliminate it. The problem is that Orb is not powerful enough to face the corruption head-on. The only path forward is to explore each location, find upgrades, defeat enemies to grow stronger, and build toward a confrontation that currently looks unwinnable. Every weapon Orb carries drains limited resources. The sun itself is a threat — without the ozone layer, daylight is lethal, so all movement happens at night. A battery that is slowly running down sets the deadline. The odds are stacked against Orb. That is the whole premise.