In the future transplant techniques have been perfected and the world at large doesn't think about where all the body parts come from, but you will.
In the future a war has been fought, the result, life is sacred from conception... until thirteen and then you can be retroactively aborted, unwound and your parts are up for who ever can afford them.
Three teenagers scheduled for unwinding are on the run. Connor is not a good boy, so his parents signed the unwinding order. Risa is a ward of the state, who is being unwound due to budget cuts. Lev is a tithe, offered up by his parents in accordance with their religion.
This is a world that I find no difficulty envisioning as a very real probability for us. Disturbingly dystopian hidden under a veneer of normalcy. I was horrified by the callousness and was uplifted by hope by turns. The maze these three run just to survive will keep you reading. This is a book that you will think about long after you've finished it.