The third book brings our protagonits out of Chicago.
Finally, we get to know the world outside the fence that surrounds Chicago. Tris and her friends reach the research establishment and find out the truth about their city. The story gets an interesting turn and in the end, Tris has to save the whole city. Her relationship with Four gets deeper again and also Four’s relationship with his mother is on a good way.
The protagonists have to face difficult decisions about their own and other’s lifes. While reading, you always ask yourself what you would have done in such a situation. Allegiant has a very psychological touch, again, and an interesting possibility of our future with all those serums and new technology but a population that is afraid of finding out what happens outside their city.
Four was originally the main character…?
I don’t want to tell you anything about the end. The alternating viewpoint between Tris and Four keeps the story going and lets the reader know about different things happening at the same time.
Originally, Veronica Roth started her book with Four as the main character but then decided to create a female protagonist to make the story more interesting and because Four’s story was difficult to continue. His story can be read in a fourth book that also overlaps with Divergent in the end, so you find out about Four’s first impressions of Tris.