It is the late 26th century. Earth is recovering from a catastrophic explosion that exterminated the majority of the population centuries ago and made most of the surface uninhabitable due to unearthly weather conditions. The surviving humans organized along four radically different ideologies, called Paths, to rebuild the world as they see fit: Harmony, Dominance, Progress, and Salvation. Followers of the four Paths live in a fragile peace, but in almost complete isolation next to each other.