Through this book, Cassie and Evan start to fall in love, and they try and fight the 12th system, which is an injection with nanobot technology to rule over humans. In the end, they try and stop it, but there is a big explosion, and Vosch, who created the injection, escapes. And Cassie is reunited with Evan. I like books that have action and adventure, so I would definitely recommend this book. First-person because gives his own opinion a lot

This book is about two young teenagers, especially protagonists Cassie and Ringer, as they try and survive the world threatened by aliens that intend to squash humanity. I like books that deal with more fiction because to me it is more of a page-turner. The main theme of this novel is hope. The role of a promise helps me understand this is the theme because characters use promises as a sign of hope in the book.