When their mother's job takes her away overnight, Caroline and her younger sisters find themselves stuck with Mrs. Gladstone, a strict babysitter whom the girls suspect is a witch.
After insisting that the redecoration of her bedroom include wallpaper with lavender daisies and yellow roses, nine-year-old Caroline changes her mind but cannot figure out what to do about her colorful mistake.
Nine-year-old Caroline receives unexpected help from her two younger sisters in her plans to earn her own spending money, but their efforts end up creating a big problem for the entire family.
Caroline makes exciting plans for her third grade class's participation in the school fair and tries to convince her mother to let her dress in a more attractive, feminine manner.