I really enjoyed this one and would rate this at a 4.5 if I could. The story was interesting and kept me turning the pages. The Earth has been transformed after WWIV destroyed it. At the time, the leaders developed a treaty with an alien civilization called Loge. The agreement was that The Ancients would fix the Earth and when it could support it, The Ancients would live on Earth with the humans. In the meantime, every night at midnight every human,ten years and older, participates in The Taking which involves The Ancients siphoning antibodies into themselves to help them acclimate to the Earth's atmosphere. I really liked the characters in this story. Ari is the main character and her closest friends are Gretchen and Law. There is an interesting dynamic here because they grew up together and recently due to who Ari's parents are and who Law's parents are, an agreement was made to create a union between their families to strengthen the view of the system. Ari's dad is the commander which makes her next in line for that role and Law's mother is the President. Unfortunately they did not count on the feelings Gretchen and Law would have for each other as well as those between Ari and Jackson. Ari is smart and tough. Because of who her dad is and her future role, she has had to push herself and she is determined to prove herself but also do some good for the world.Enter Jackson - he has a lot of secrets and I won't give any away here. We find out early on that he is Ari's Ancient and he has a lot resting on his shoulders. I don't want to give anything away here so I'm not going to say a lot. I loved him - he is caring and protective and only wants to do what is right. Yes, there is a relationship developing here between Ari and Jackson but it doesn't override the rest of the story...which is important. There is a lot of action and it is a very fast paced book. I will say that if you aren't a fan of cliffhangers you will want to wait for the next book to come out before reading this. I will definitely be reading the next book of the series when it comes out and am going to go file this onto my "really want to read" shelf immediately.