The candidates that are chosen all have to go through four tests and pass all of them, then have a review from the leaders before they can be chosen. The first test consisted of just an intelligence test on paper on the subjects math, history, English, and languages (yes English and languages were to separate tests.) All of her friends from her colony make it in this one. The next test they have to complete is a test to see what they currently know on the outside world like poisonous plants between edible, and how to fix a solar panel. They learn not to take guesses because before the test the professor said putting something aside and not answering is better than guessing. At first people didn't understand but when the sorted the poisonous and edible flowers, they were then told to eat the edible ones and if they didn't they were disqualified. That's when some kids started dying. Also Cia's friend from her colony gets a nail in the eye when guessing on how to fix the solar panel.
The third test is a group test. There are groups of five and five doors. They are each given an hour to look at examples of questions which are behind the doors and decide which candidate is better suited for the questions. But Cia's group only has two so someone has to do two which isn't the real problem. One person can do them all, but if someone tries to re-enter a door with a question already answered they die. And they can't see which questions their members of the group are answering. After the first boy, which seemed to take about an hour, the other girl goes in hoping to do well. But Cia looks at the boys work who went in first and realizes that he is exceedingly smart and that he was lying to them. So she has a theory that he answered all of the questions so when its her turn she doesn't answer her question and finds him outside smirking, but with a surprised look on his face when she comes out. This is when she knew that he was trying to kill them all. Except the last person in the group which question he didn't do. But the first and last boy get all the questions right and move on to the next round.
The fourth round is a survival round where they are placed 700 miles away from the ending point and have to make it thee without dying or being slaughtered by the other candidates. Cia and Thomas immediately meet up and to make long story short, through tough times make it while being poisoned, shot at, chased by mutant animal, and almost being blown to pieces. It end with Cia and Thomas graduating and leaving us on a cliff hanger of what's going to happen next. I can't wait for the next book and I recommend it to all people who enjoy a good read.