Cia is disappointed when she isn't chosen for The Testing at her graduation ceremony. The next day she finds out that there was a mistake, she (and several classmates) were chosen. That night, her father tells her the truth.
The tests Cia endures are gruesome and terrifying, and I'm really excited to continue the series.
My only issue with the book is that the romance seemed forced. Cia and Tomas transition from rare interactions to a couple very, very quickly. I think that if the author wanted Cia to be attached to someone during the tests, Cia and Tomas should have already been a couple.