Tris Prior's initiation day should have been marked by victorious celebrations with her chosen faction, instead it ended with unspeakable horrors. Now unrest surges in the factions around her as conflict between their ideologies grows. War seems inevitable and in times of war sides must be chosen, secrets will emerge and choices will become ever more irrevocable. Tris has already paid a terrible price for survival and is wracked by haunting grief and guilt. But radical New discoveries and shifting relationships mean that she must fully embrace her Divergence even though she cannot know what might be lost in doing so