When war breaks out, Billy's dad joins the army and most of his friends are evacuated from Balham, South London. But Billy's mum doesn't believe the bombs will ever fall on them and she refuses to send him and his sister Rose away. Life in Balham has certainly changed for Billy: no school, no friends and, because of rationing, no treats. But by September 1940, things are about to get a lot worse. Hitler has a plan for the destruction of London and soon Billy is caught up in the Blitz: an event so terrifying, it will take every ounce of courage for him to survive in war-torn Balham and keep his family together.