The faction-based society that Tris Prior once believed in is shattered--fractured by violence and power struggles and scarred by loss and betrayal. So when offered a chance to explore the world past the limits she's known, Tris is ready. But will she be prepared to face impossible choices about courage, allegiance, sacrifice and love?

Four years after a virus wipes out all adults, 13-year-old Anna Salemi spends her days foraging in the ruins of a Sicilian landscape ravaged by fires, looting, and violence. Dogs rove in packs, desperate for food, as do the nearly feral children who've been left behind, untouched by the Red Fever-- until puberty strikes, and they become susceptible to the virus. Anna channels her energy into pursuing one goal: keeping her younger brother, Astor, alive...