Ruby and Mum cling to each other while they live through the terrifying London Blitz, waiting for Dad to come home from the war. Day after day they hope for his return -- but when the moment to meet him at the station finally comes, Ruby hardly recognizes the tall man who steps off the train. He's big and sunburned, and he doesn't seem to be as engaged as he once was. It's easier to play outside in the wreckage of the bombings than to stay at home with a dad she doesn't know anymore. But when Ruby hurts her knee in the ruins, there's only one person who can rescue her and make her feel all right.