The boy in the striped pajamas

I think this book is going to be about a boy in striped pajamas and that is all you are able to tell by looking at the cover which looks like burlap with light blue and blue gray stripes. But after reading it I know that any reference to the boy comes later on in the book and instead of being introduced to the boy in the striped pajamas (Shmuel) . We are introduced to Bruno a boy who is dealing with large change on the world he knows by moving away from Berlin to out-with camp headquarters and has no idea what behind the fence. He later on explores out and finds a boy on the other side of the fence and realizes that he's in a completely different world than Shmuel is in.