The year is 2114. Deep underground in a labyrinth of tunnels, a people has emerged and learned to thrive while the scalding sun has turned the outside world into barrens inhospitable to life, as we know it. California laid a wasteland by the Second U.S. Civil War still weeps radioactive pollution at ground level that the impoverished masses cannot escape. The world of the future is clearly divided on grounds of color and lines of racial bigotry while the blood pedigree some people are lucky to be born with serves as the only "passport" to the utopian Kalifornia Sky Shelf.