There are 5 groups in the society called factions and they are Candor (the honest), Abnegation (the selfless), Dauntless (the brave), Amity (the peaceful), and Erudite (the intelligent). There was lots of character development and it proved to be an amazing end to the second book. It did not suffer middle book syndrome but rather it made the story so much more interesting. After Divergent ends, Tris and Four are both outsiders and in need of shelter. They are saught after for execution, but they are saved by Amnity, and then by the factionless. Are they able to escape the wrath of Jeanine? Will they able to ever live peacefully? This is an amazing book and keeps you on your toes!