A widowed father, Bill Morgan, takes in his brother-in-law, Johnny, to help care for his spoiled children, Kyle and Brittany, while he focuses on his career and a budding romance. The kids' misbehavior leads to them being removed from the North Pole's Christmas gift list, and Santa and Mrs. Claus take a break from their holiday duties. The Morgan children's eldest daughter, Rudolfa, seeks to exploit her father's absence and take over Christmas, but her younger sister, Kristin, has a plan to redeem the family and save Christmas.

Once Upon a Christmas
Santa's daughter Kristin helps him rediscover the magic of Christmas, leading a heartwarming journey to revive the holiday's spirit.