When a young woman opts to abort a miraculous conception, a Christian Fundamentalist group intervenes. Duped into an adoption scheme, Maggie agrees to carry the baby to term but gradually comes to suspect the entire arrangement. She ends up marooned at a rural service station, where she encounters a wise old radio preacher, Isaiah, and his reluctant prophet of a son, Manny, who end up guiding her on the rest of her journey. It's not an easy journey, however, as Maggie is stalked, chased and forced off the road. In a woodsy field, she comes face to face with her assailants and herself, as she prepares to undergo a painfully unorthodox delivery and yet another unforeseen miracle...