The Oneness is a band of humans that demons hate and angels serve. It is not meant to be broken. Just as a body needs each body part, The Oneness needs each member and each member needs The Oneness. When two young men catch a girl in their fishing nets, they do not immediately realize they have accidentally rescued a member of The Oneness. They know only that a young woman suffering from extreme loss has come to their care, and they are determined to help. No one realizes just how difficult it will be to learn what to do with a member severed from what ought to be an unbreakable band.

As with most of Rachel Starr Thomson's books, Exile is unique. An allegory, it blends the world as we know it into a speculative novel exploring the unity, strength, importance, and fallen humanity that comprises the body of Christ. This is not a story for those not willing to "suspend disbelief" in order to enjoy "weird" fiction, but for lovers of speculative fiction (especially readers looking for clean, Christian worldview) Exile will not disappoint.