This is really one terrifying and sad world. Women are hunted and sold to Breeders, where they are used just to give birth to babies. Riley is one of the few baby girls born to freedom. Her mother has escaped Breeders when she was young. 
 The Breeders control the world basically. She lives with her mother, aunt, step father and younger brother outside of town, to avoid detection. 
 One night her stepfather is killed, mother and aunt taken, she and her brother are saved by sheriff son. She makes it her goal to save them. 
 The world the author created is really sad and horrible. What I have the problem with most is the tone of the book. Everything is really sad and depressing, there is no redeeming qualities. No hope for a better future. I also dislike a bit the main character, she is really selfish. I mean, in order to save her family, she basically doomed everyone else. 
 I usually really like dystopia book, where the world the live is horrible, but the story has to have a grimmer of hope at least. Something to look forward to. 
 Not bad book at all, just a bit depressing.