D i v e r g e n t .
Tris lives in a futuristic version of Chicago where people are divided into factions on the basis of various traits. Each faction cultivates traits it deems desirable in the interest of promoting peace and a functional society. Each also fulfills its own social role, like conducting research, guarding the city, and running the government. Youth are forced to choose which faction they want to ally with when they come of age, and when they do, they have a choice between leaving their families behind if they choose to follow a different faction, or staying in the communities they were raised in.