Insurgent

As they approach Erudite headquarters, they hear gunshots. Tris arms herself with a stunner, and they look for a way into the building. 

Finding the Erudite headquarters guarded by Dauntless under a simulation that responds only to sound, they enter using a ladder from an adjacent building, passing over through windows three stories up. Fernando is shot and killed when his glasses fall off. 

With Erudite headquarters in chaos as the Dauntless/factionless alliance launches its attack, Marcus, Cara, Christina and Tris, disguised as Erudite, follow Cara to a control room. They run into Caleb. Marcus confronts him and knocks him out so that he cannot tell anyone they are there.

Tris discovered from Tori that only the lab has extraordinary security, so they head for Jeanine’s laboratory computer. They leave Cara inside the control room, connecting all the factions’ computers together in preparation for broadcasting the secret file.

When they reach the lab floor, Edward is already there. Tris realizes that Tori must already be inside the lab and that Jeanine may already be dead. Edward shoots Christina in the leg and Christina shoots Edward in the side. Tris and Marcus must leave them behind; Christina holding Edward hostage.

Marcus and Tris split up, each taking a door that might lead into Jeanine’s laboratory. Tris finds herself battling a simulation of herself. Because she is more desperate than her simulated self, she manages to conjure up a gun. She shoots her simulated self just before her simulation can shoot her.

Tris enters Jeanine’s laboratory to find Tori arguing with Jeanine; she wants Jeanine to acknowledge her brother, a Divergent who was killed on Jeanine’s command. Tris disarms Tori and tries to convince her not to kill Jeanine, so that they can retrieve important information from her computer. Tori doesn’t listen and stabs Jeanine in the stomach.

Tori accuses Tris of being a traitor, as Tobias and Uriah enter the lab. They found Marcus next door fighting a simulation and they are stunned to find Tris there too. Tobias accuses Tris of betraying him by working with his father. Tori tells Uriah to take Tris to the lobby to wait with all the other prisoners to be tried as a war criminal. Tris confronts Tobias, telling him that he should understand that she is still the same person who refused to kill him. He should trust her, and trust in her belief that they need to rescue the secret video file.

Tris sits with Christina and reports that she wasn’t successful. Tobias comes downstairs and takes Caleb away to disarm the security on Jeanine’s computer, presumably so they can destroy the information on it. 

Lynn is brought into the lobby; she has been shot in the stomach. She dies.

Tori returns to the lobby just as Johanna Reyes enters the building. Tori announces that the Amity won’t be represented in the new government because of their refusal to take sides in the recent battle. As Evelyn enters the room, Tris notices that the factionless have all the guns. Evelyn announces that the faction system is to be immediately disbanded in favor of a factionless society; Tori objects, but the factionless hold up their guns. The Dauntless have all been disarmed. Tobias, Marcus, and Caleb enter the lobby and screens come to life and begin showing a video.

Tobias and Tris reconcile, and Tris hopes that all their secrets and troubles are behind them.

They watch the video: a woman named Amanda Ritter announces that she is the leader of a group fighting for justice and peace in an increasingly violent, immoral society. Next, the video shows hideous images of war and death. Then the woman reappears. She announces that their carefully structured society was mindfully placed in isolation from the rest of the world in the hopes that they would develop a sense of morality and justice missing from her society. When there are people with flexible minds—the Divergent—in sufficient numbers among them, the Amity are to open the gates, letting them out to help the people who remained outside. She announces that she is about to enter the new beginning of their society herself as Edith Prior. The video ends.

Uproar ensues.