The Dweller compound has survived an attack and our heroes are headed south along a treacherous river. Luke is stricken with mind-freezing nightmares and learning to hunt. John fears the challenges of the raging river and Maria tries to befriend a wild creature, but Sam has other ideas.
Meanwhile, in the City, things are heating up in the battles between the Believers and Saul’s force, the Wolves. Lucian and Amos launch a strike that goes awry, and learn about yet new forces that enter the battle.