The Farmer family is deeply in debt, and they may soon be forced to vacate their home. Kelly and Lynn Farmer, seven-year-old twins, make the decision that this will not happen. They come to the realization that someone extremely cruel and cunning is to blame for all of their family's problems: it is their aunt Agatha. Aunt Agatha is now a witch, thanks to a moon stone that she discovered many years ago. She possesses superhuman skills, which she sadly employs to harm others. Intentionally causing harm to others, even her own family, is something she delights in doing. A mystical stone must be taken from Agatha by the ladies.