London calling. But how can that be? The old radio that his grandmother left him when she died seems to pull in more than just a few random AM stations. When Martin sleeps, he is drawn into the world of London during the Blitz. Sixty years ago. He meets Jimmy, a boy from the past who asks for his help. Through Jimmy, Martin is going to learn a lot more than just what went on during the Blitz. He will learn about his own family's past as well.