For the record, we are in a world divided into five factions determined by the traits of the human species (Amity, Erudite, Candor, Abnegation, Dauntless). At sixteen you pass a test that will determine your place in this company. Beatrice, heroin, grew up with his family in the Abnegation section, but its test results sound the start of a great upheaval.
I'll stick to the minimum, the rest is up to you! Just know that this is a novel about adventure, action, emotions, betrayal, blood, tears and love. There are nearly 500 exciting pages, stifling and unglamorous (I say this because there is romance, but not cloying marshmallow, it's just the opposite). In the center, you have a little girl determined to carve a place in its section, ready to defend and overcome all obstacles. And you're the hero in all its stunning: strong, mysterious, that reveals nothing, a real hard! (I liked that the story does not revolve around romantic feelings, it would have affected his rawness stripping that is its charm, I think.) Anyway, this novel has it all and he enjoyed tremendously. I can only recommend it warmly.