The last instalment of Veronica Roth's "Divergent" series is better and more action packed than the first 2 books. In this book, Tris Prior and her boyfriend, Tobias Eaton (Four) travel outside of Chicago to the behind the fence. Here they will learn the meaning of the factions, and the experiment that revolves around it. In the compound Tris and Four learn what exactly what it means to be Divergent.
Follow Tris and Four, and all there friends (new and old) in the final book of the series.