It is 1944, and the Adams family is weary of the war against Hitler. Bobby Summers and Helene, living in France with a group of Resistance fighters, find themselves in great peril. Boots returns from Italy, to the delight of Polly and their twins — but he brings a German prisoner who has a horrifying story to tell. Sammy and Susie Adams are trying to keep the family business going in wartime London, while their son Daniel catches the eye of a lively young American girl. She brings a breath of fresh air to the Adams household, so many of whose younger members are doing their bit for the war in various far-flung places of the world. As plans for the invasion of France get under way there is excitement and danger, but love continues to blossom.