What is the cliffhanger at end of chapter 2 boy in striped pyjamas?

The cliffhanger at the end of Chapter 2 of "The Boy in the Striped Pajamas" is that Bruno meets a boy named Shmuel on the other side of the fence separating his house from the concentration camp. Bruno is curious about Shmuel and wants to know more about his life, setting the stage for their developing relationship in subsequent chapters.