In 1938, twelve-year-old William has already decided to leave home when his younger sister informs him that she and their brother and sister are going too, and right away, but complications arise when an acquaintance decides to "help" them.
Determined to be as strong and powerful as the first Harleigh, twelve-year-old Harleigh Fourth and an equally diminutive new friend try to foil the plans of a distant relative who is seeking the long-lost Weatherby fortune.