In a post-apocalyptic world, civilization has collapsed due to a catastrophic chemical contamination. Kyle wants to save his infected daughter, who is about to turn into a dangerous mutant. He starts his journey equipped with weapons and a protective suit trying to survive as he gets attacked by mutants. Fighting his way through challenging terrain, he reaches multiple cities where he meets NPCs who give him clues about where to go next and sell him upgrades/new weapons as well as automatically repair his suit. His last fight is in the laboratory where at the end he finds the healing potion.