In the futuristic world, what remained of mankind after a great war was split into five factions to keep the peace: Erudite the intelligent, Candor the honest, Abnegation the selfless, Amity the kind, and Dauntless the brave. Anyone who doesn't fit into one of the factions is factionless. At the age of sixteen, teens will choose what faction they will spend the rest of their lives in. Tris Prior is a Divergent which is someone who fits into all factions and people consider dangerous. After she found this out, she choose the Dauntless and became friends with a former Candor member named Christina and falls in love with Four a.k.a Tobias Eaton, also secretly a Divergent. They later ascertain that Jeanine Mathews, the Edurite leader, thinks that Erudite should be the governing faction instead of Abnegation, and is planning an attack on them with the help of Dauntless. But the Dauntless members don't know this and are injected with a "tracking device for safety precautions". It is really a device to put them under a simulation and turn them into mindless soldiers. Tobias and Tris were injected, but they are Divergent so they don't fall under the simulation. They pretend that they are to blend in and witness the mindless Dauntless members attacking Abnegation. They retrieve Tris' parents and brother Caleb and Four's father, Marcus, the Abnegation leader. Together they make their way to Erudite, unfortunately killing some Dauntless in order to get there. On the way, Tris' mother was shot and killed and her father was firing away when a wave of Dauntless came through and was shot as well, knowing he would die. When they finally reached Erudite, Tobias and Tris fought Jeanine to make her turn off the simulation, but she refused. So, Tobias injected her with the same device and ordered her to turn it off. Since she was no longer aware of what she was doing, she switched it off and the Dauntless woke confused as to where they were and what they were doing. Now, many Erudite members were after the Tris, Tobias, and Caleb so they fled to Amity.