In a world terraformed by war remains the city of Chicago. Within it live five factions that divide the population into the five ideals of human life. First is Erudite. They value knowledge and logic above anything else. Candor is the second. They value honesty and truth. Then you have Amity. They are kind and are always happy. Fourthly there is Abnegation. They are selfless and believe only in helping others. They forget themselves. Finally, you have Dauntless. They are brave and protect the population. Cassidy was born and raised in Erudite. It is her home and all she has ever known. She faces her aptitude test which will show her where she truly belongs and then she will have to decided whether to stay or defect. Cassidy has heard stories of something called Divergence. It means you don't conform to one faction. You are multiple. Divergence is dangerous. A Divergent is a threat to the system. They do not conform. They do not belong. They have to be destroyed.
16 parts