Left in charge of her home and infant sibling when her parents are called away at Christmastime, Bettina disregards a family custom about leaving out rice pudding for the nisse, who make their magic known when the baby disappears. "Christmas has come, and with it a sparkling white winterfrost over the countryside. But twelve-year-old Bettina's parents have been called away unexpectedly, leaving her in charge of the house, the farm, and baby Pia....