After Santa Claus has noticed how many children have become naughty, he decides that he will not deliver presents to any children this year. But his daughter, Kristin Claus, thinks there is one more chance for a Christmas. Kristin took on the challenge of trying to deliver all the presents (just as her dad, Santa, would) in the Mortal World. She made a deal with people in the North Pole that she would change a family on "Santa's Naughty List" to be on the "Nice List". She uses her magic to go to the Morgan house, a family of a single father and two spoiled children, and try to change them to nice. But the children are tricked by Rudolfa, Kristin's sister, who wants to turn Christmas into a joking holiday. Kristin was mistaken as a nanny for the children and played along with the role. The children begin to resent Kristin, and Kyle even told their dad that Kristin was dangerous. Kyle tries to engage Brittany into it. They treated Kristin badly and she left the Morgan house when no one was at home. Bill Morgan became work-obsessed since his wife died. On a work-trip he carried along the children and their uncle and took a rest stop at a diner. They met Kristin there (she used her magic to meet them there) and Bill convinced her to look after the children on the trip. The family (and Kristen) take an unexpected detour. Rudolfa uses her magic to make a fake detour sign and sends the family in the middle of nowhere. She also sent an elf dressed as a deer into the middle of the road, causing them to swerve into a ditch. They spend the night at a nearby old, abandoned house, where Kristin confronts Bill about his own selfish ways. The kids continue to act selfish and bratty, but Bill and Kristin don't put up with it. Brittany soon realizes that she is behaving bratty and makes the family breakfast-in-bed from some food supplies she found in the house. A fire breaks out, and Kyle, the family's son almost dies. Kristin gives her immortality to save him, but she now cannot re