Plot
In a futuristic dystopian Chicago, society is divided into five factions: Abnegation (the selfless), Amity (the kind), Candor (the honest), Dauntless (the brave), and Erudite (the intelligent). The remaining population, the Factionless, holds no status or privilege. Upon turning 16, children undergo a serum-induced psychological aptitude test that reveals their best-suited faction, although they can choose any faction as their permanent group during the subsequent Choosing Ceremony.
Beatrice Prior lives in Abnegation, which runs the government. Her father, Andrew, and Abnegation's leader, Marcus Eaton, serve on the ruling council. When Beatrice is tested, her results show equal attributes of multiple factions: Abnegation, Erudite, and Dauntless, making her a Divergent. Her proctor Tori Wu, a Dauntless woman, records her results as Abnegation. She warns her to conceal her accurate results because Divergents can think independently and would threaten the existing social order.
The next day, Beatrice's brother Caleb chooses Erudite at the Choosing Ceremony, while she selects Dauntless. She meets Christina, Al, and Will, other faction transfers. Christina and Al are from Candor, and Will is from Erudite. Dauntless leader Eric warns the initiates that those who fail to meet the faction's high standards will become Factionless. Beatrice jumps from a tall building into a dark hole, landing in a net and gaining respect from Four, a transferred instructor.
Beatrice initially struggles in Dauntless training and ranks far below the cutoff after the first evaluation, but with Four's help, she slowly improves. Eric then matches her against her nemesis, Candor transfer Peter Hayes, in a fight that ends with Beatrice's defeat and recovery in the infirmary.
Unwilling to miss the crucial Capture the Flag test, she leaves the infirmary, joins the other initiates, secures her team's victory, and makes the final cut. In the next training phase, the initiates confront their deepest fears in psychological simulations. Beatrice's divergence enables her to navigate the tests creatively, but Four cautions her to conceal her abilities and to approach the challenges as a typical Dauntless would.
Beatrice visits Caleb, who tells her that Erudite plans to overthrow Abnegation. When she returns, Al, Peter, and their fellow Candor transfer Drew attack her, but Four rescues her. The next day, Al begs Tris to forgive him, but she refuses and calls him a coward. He later kills himself by jumping into "The Pit".
Four takes Beatrice into his fear simulations to prepare her for the final test. There, she learns that he is Tobias Eaton and that his father, Marcus, used to beat him as a child. Beatrice then passes her test and officially joins Dauntless. The Dauntless recruits are injected with a serum from Erudite, supposedly for tracking but actually for mind control.
The next day, the Dauntless prepares to attack Abnegation under Erudite's orders. As the serum fails on Divergents, Tris must blend in to avoid suspicion. She finds Four, who also pretends to be under control but actually did not take the serum. When the Dauntless raid Abnegation, they split from their group to find Beatrice's parents. However, Eric captures Four, realizing he isn’t under control, and orders Beatrice's execution. Her mother, Natalie, a former Dauntless, saves her but is later shot and killed during their escape.
Tris finds her father hiding with Caleb, Marcus, and several Abnegation members. The group sneaks into Dauntless headquarters, where Tris encounters Peter and forces him to lead them to Erudite's control center. Her father sacrifices himself in a shootout, so Beatrice goes in alone to find Four, who is now under mind control.
Knowing Four's fears, Beatrice manages to wake him from the mind control, and both enter the central control room, where Erudite's leader, Jeanine Matthews, has Dauntless execute nearly the entire Abnegation faction. Beatrice uses a sample of the mind control serum on Jeanine to force her to cancel the program. The group escapes the compound and boards a train.