
Karl is a 14 year old Jewish boy living in Naziera Berlin. His family does not practice the religion, be he is still bullied at school. Karl becomes a boxer, with the help of the German champion Mac Schmeling. Now Karl has to choose between his blossoming boxing career and keeping his family safe as the German Nazis begin to take power.
Bored and lonely after his family moves from Berlin to a place called "Out-With" in 1942, Bruno, the son of a Nazi officer, befriends a boy in striped pajamas who lives behind a wire fence.
This book follows up where Once left off. Felix is now with Zelda and are now run-aways in Nazi occupied Poland. With the help of a woman named Genia, they begin to start a new life.