A story set during World War II. It is the summer of 1944. There have been no air raids for quite a while, and people are beginning to think the war may be coming to an end. Katie and her family don't sleep in the shelter any more, and it's a relief to be back in the comfort of proper beds. One night in June, she wakes to hear a noise like a loud motorbike, coming closer. It stops abruptly, and there are a few seconds of silence - then an explosion that rocks the house. The Doodlebugs have arrived ...