The basic plot is that John Smith (main character) has been moving around the united states. He is 15 and isn’t from this plant. He is from loric an alien plant just like earth. He has been hiding out from the Mogadorians. Mogadorians are an alien race that is reagvenes and has destroyed the loric plant. The Mogadorians are after the nine kids that left the plant in time and got refuged on plant Earth. The Mogadorians have to kill the kids in order and three are dead and john is number four.
I loved the book. It has action and adventure. It also has a good plot to it. The book is for Si-fi fans and however likes action and adventure. The book isn't that long 448 pages and if you like it, it reads fast.