Bruno, a 9-year-old boy, lives in Berlin during World War II. He has a comfortable life with his parents, 12-year-old sister Gretel, and the maids, including Maria. However, everything changes after a visit by Adolf Hitler. Bruno's father is promoted to Commandant and the family has to move to "Out-With" due to the orders of "The Fury" (Bruno's innocent mispronunciation of "Führer").
Bruno is initially very unhappy about leaving his friends Daniel, Karl, and Martin in Berlin. At Out-With (which is actually Auschwitz), he notices a strange camp where the prisoners wear "striped pyjamas" (prison clothes). One day, while exploring the wire fence, he meets a Jewish boy named Shmuel. Bruno discovers that they share the same birthday.
Shmuel tells Bruno about his family on the other side of the fence. He mentions that his father, grandfather, and brother are with him, but his mother is separated from them. Bruno and Shmuel become good friends, and Bruno often sneaks food to Shmuel. However, Bruno's naivete is evident as he fails to understand the true nature of the camp and the horror that surrounds him. He continues to visit Shmuel, oblivious to the danger and the reality of the situation.
The story of Bruno and Shmuel is a poignant and heartbreaking tale that explores themes of friendship, innocence, and the atrocities of war. It shows how a child's perspective can be so different from that of adults and how easily they can be shielded from the harsh truth. Through Bruno's eyes, we see the horror of Auschwitz in a new and powerful way.