When war is declared in 1939, fourteen-year-old Polly is working in a shop in Liverpool. Her friend Tad joins the Navy, and her pal Sunny is in the Air Force. Polly is determined to join up too when she is old enough. When Polly's father has a stroke, she tries to persuade her mother to take her father back to Dublin where there is no war. Then Polly could leave home. But she hasn't reckoned on the destructive powers of the Luftwaffe. The city is bombed and Polly's parents refuse to leave for safety when their adopted city - and their family - are in mortal danger.