Beatrice Pryor lives in a dystopian Chicago, which is divided into five factions devoted to different virtues. On a set day every year, sixteen-year-olds must select which faction they will devote the rest of their lives to. Beatrice must choose between staying with her family and being who she really is. Beatrice also has a secret, one she has been warned can mean death if exposed. Now, Beatrice will be forced to make tough choices that can determine the course of her future.