Father John Alston has lost his faith but his heart remains strong. Having left behind a computerized, climate-controlled, and disease-free Europe, he administers aid to the destitute of a Borderer town in the Endless City. In the squalor of what was once North Africa, he provides spiritual comfort and basic health care, while preaching a message that he no longer believes.

But the recent explosion of a deadly virus has John profoundly troubled and desperately searching for answers. Suspecting a native plant commonly used as an intoxicant, John decides to investigate further with the help of a brilliant but mysterious Borderer woman. His pursuit of the mystery will set him on a collision course with powerful political realities designed to maintain the status quo of the Third World. On a harrowing journey through a radioactive valley of death—and through his own painful history—he will confront devastating truths that will either revive his damaged soul or destroy it completely.