Caught in post-apocalyptic desert and ravaged by a treacherous disease, nameless outcast has reached a biosphere, a huge dome that covers the city and protects it from the desert. This city is now controlled by mutant clan, which worships to the prophet. Several survivors exist in their hideouts, and one of them, Henry Leicester, saves the outcast once he enters the city. His motives are simple; the outcast should help him with certain tasks and he helps the outcast with medicine to cure the disease. During the game, player will meet more survivors, understand who is who, and try to survive.