Shmuel and Bruno is the exact same age. The two boys are both polite, and it seems like both of them try to be a good friend.
Shmuel and Bruno live two very different lives. Bruno lives in a rich and wealthy family. Shmuel lives a hard life in a concentration camp, where he has lost both his mother and father. Bruno can go to school and eat as much as he wants to, but Shmuel has to work the whole day, and does not get enough food.
Bruno is a typical German boy with blue eyes. Shmuel is a jew with dark eyes, which is hated by the Nazists. The two boys are not supposed to be friends.