Ostracized or incarcerated her whole life, seventeen-year-old Juliette is freed on the condition that she use her horrific abilities in support of The Reestablishment, a post-apocalyptic dictatorship, but Adam, the only person ever to show her affection, offers hope of a better future.

"June and Day have sacrificed so much for the people of the Republic--and each other--and now their country is on the brink of a new existence. Just when a peace treaty is imminent, a plague outbreak causes panic in the Colonies, and war threatens the Republic's border cities"--

As the third Trial draws to a close, Thomas and some of his cohorts manage to escape from WICKED, their memories having been restored, only to face new dangers as WICKED claims to be trying to protect the human race from the deadly FLARE virus.

Thomas and the Gladers, having solved the Maze, plan on returning to their lives, but instead find the earth a wasteland with Cranks roaming the desert in search of their next meal and they are faced with the challenge of crossing the Scorch in two weeks in order to arrive at a safe haven.

Tris Prior survives the Erudite simulation attacks that occur during the time she expected to be celebrating her achievement of being ranked first among the initiate class of her chosen faction, Dauntless. Even though the Dauntless have been freed from Erudite mind control, a war develops and secrets emerge.

In a future Chicago, sixteen-year-old Beatrice Prior must choose among five predetermined factions to define her identity for the rest of her life, a decision made more difficult when she discovers that she is an anomoly who does not fit into any one group, and that the society she lives in is not perfect after all.

June and Day make their way to Las Vegas where they join the rebel Patriot group and become involved in an assassination plot against the Elector in hopes of saving the Republic.