There are five factions. Abnegation, Dauntless, Amity, Candor and Erudite. All of them believe different things for the way things are, and all serve a different purpose in society. Abnegation believes in being selfless, and they do everything for the good of others and nothing for themselves. Dauntless are fearless and chance takers. They help protect the society and are "hard core". Amity are peace keepers. They believe in equality and peace among all. Candor believe in honesty and telling the truth. And Erudite search for knowledge and the world is a classroom. When citizens turn 16 they choose a faction. They take a test to see which would be the best fit for them. Sometimes it's the faction you are born into, and sometimes it's another. And then there are the people that are called "Divergent" which means they are eligible for more then one faction. The people who are Divergent often keep it a secret because there are serious consequences when discovered. Many end up faction-less. These people are feared by the government because the factions have no way of controlling the people since they often show personality traits of other factions and don't always work under certain simulations and serums. That is what the main character Beatrice is. She was born into Abnegation and then found she was divergent and could be in Abnegation, Erudite, or Dauntless. Surprising everyone and herself, she chose Dauntless. Usually people from Abnegation do not choose Dauntless. While she goes through the gruesome trails to secure her spot in the Dauntless faction, there is a terrible plan brewing in the background as Jeanine, Erudite leader plans a simulation attack. Beatrice (now Tris) has to figure out what "divergent" really means and how important she could be in saving millions of peoples lives. And of course there is the mysterious Four (yes, that's his name) who seems to have a terrible secret hidden in his past and a personality that is different from the other Dauntless. Maybe Tris will find love while she is trying to save the world.
I loved this book. If you have read the book Matched by Ally Condie or liked the Hunger Games, I think that you would really enjoy this book. Personally, it is one of my favorite books now and I cannot wait until the next book comes out. I believe the book store is calling you.