Insurgent (2015) Plot Summary Explained

Five days after the assault on the Abnegation faction by the Erudite leader Jeanine and her mind-controlled Dauntless soldiers, Jeanine has declared martial law, insisting the Divergents and their allies are the enemies.

Among the Abnegation wreckage, the Dauntless leaders Max and Eric recover a box with all five faction symbols on its sides. Jeanine presumes it contains data from the city's founders and the means to end the Divergence problem. Since only Divergents can open the box, she orders that all of them be captured.

Divergent Beatrice "Tris" Prior, her boyfriend Four, brother Caleb, and Dauntless troublemaker Peter hide in the Amity compound led by Johanna Reyes. Eric tests the occupants for Divergence. Peter reveals their location as the others escape on a train to Factionless territory. Four discloses to the Factionless that his real name is Tobias Eaton, son of leader Evelyn, whom he resents for leaving him with abusive father Marcus. At the Factionless compound, Evelyn proposes a Dauntless-Factionless alliance against Erudite, but Four declines.

The following day, the three leave for Candor to meet up with the remaining Dauntless who were given shelter there, including Tori and Tris's best friend, Christina. During the trek, a disheartened Caleb splits from the group. Upon arrival, Tris and Four are arrested and brought before Candor leader Jack Kang, who intends to deliver them to Jeanine. However, Four pleads for a trial using Candor's truth serum. The serum reveals the real events, and they are absolved, but Tris tearfully admits to killing Christina's lover, Will, which angers her.

The Dauntless, aligned with Jeanine, attacks Candor, injuring many with metal disks. Max and Eric capture Tris, revealing that she has a Divergent reading of 100%, making her ideal to open the box. Four saves Tris and kills Eric. Meanwhile, Jeanine, frustrated by the failed Divergent subjects in the simulations, is approached by Peter, who suggests exploiting Tris's selfless Abnegation upbringing to reach her.

Back at the Factionless base, Four reluctantly agrees with Evelyn that war is inevitable. Jeanine activates the disks, a mind control device that causes Christina and her friends, Marlene and Hector, to walk robotically towards a ledge and ask for Tris's surrender. Tris and Tori manage to grab Christina and Hector in time, but Marlene plunges to her death. Overcome by guilt, Tris decides to turn herself over to Jeanine.

At the Erudite headquarters, Tris threatens to kill herself rather than comply, but she is stopped by the presence of Caleb, who is fully committed to Erudite. Tris agrees to undergo the trials if the suicides cease. Under Jeanine, Caleb, and Peter's watch, Tris overcomes the first four simulations before she requires rest.

The next day, after discovering that Four was captured while he tried to rescue her, Tris fails the Amity trial, and her vital signs cease, shocking Jeanine. Peter takes her body to Four, reveals he faked her death, and assists him in overpowering the guards. Tris is now determined to unveil the box's message, so with Peter's help, they return to the simulation room. She successfully opens the box in front of everyone. A hologram explains that the walled city and the faction system were part of an experiment, with the Divergents as its ultimate goal. The world is waiting outside for them to rejoin it.

Realizing she has lost, Jeanine orders the box buried and Four and Tris executed. However, the Factionless burst in, incapacitate Max, and rescue them. Jeanine and Caleb are arrested, and the message is broadcast citywide. Celebrated as a hero, Tris is eager to explore the outside world. In her cell, Jeanine wonders about life beyond the wall. Evelyn tells her she will never know and kills her.