This Happy Breed covers twenty years in the life of the Frank and Ethel Bibbons and their children, from the end of World War I to the beginning of World War II. On one level the story is the chronicle of a middle class family. They haven't done well in the years between the wars, but in the face of another conflict, family unity spans the chasm between the generations. At another level, this is the story of England, torn at times by the conflicts of its own progress, but quietly firm in its historical moments of crisis.