During World War II, three orphaned siblings—William, Edmund, and Anna—are evacuated from London to the English countryside. They hope to find a new family who will love them permanently, not just as temporary wartime evacuees. Their search for a 'place to hang the moon' leads them through hardships, bullies, and unkind foster homes, until they find solace in the village library and its kind librarian. This heartwarming story shows how courage, books, and unexpected kindness can create a true home.