Tris lives in a futuristic society divided into factions. She is "divergent" and able to belong to multiple factions. Jeanine takes control of the Dauntless faction through brainwashing and seeks to take over the entire society. Tris works to reunite with her family from different factions and goes to war against the Erudite faction led by Jeanine. Through defeating Jeanine and turning off the brainwashing serum, Tris is able to save society, though she loses most of her family in the process.