The world ended—twice. Once at humanity’s hand and a second time at God’s, according to legend. Only Esther, the Eternal One, saw it all happen. Chosen by the Messiah to redeem humanity, she heads a holy sisterhood that rules Cathedral, the Last City. Except Cathedral isn’t the last city, and the source of the Revenant Sisterhood’s supernatural power is far from holy.

It’s the year 2500, give or take. The passage of time has become as blurry as the gray wastes that cover most of North America. No moon or stars light the night, and demonic hordes smash against the last outposts of civilization.

Two reborn nations vie for humanity’s future. In the west, Cathedral unleashes its God-engines—ancient walking war machines—in a final bid to cleanse the earth. In the east, the struggling city-state of Bastion turns to the last living AI for salvation. Between them, a tribe of technological scavengers known as the Union unwittingly holds the balance of power.

Hell is on the horizon. Who will survive?