Marge easily gets in the holiday spirit, but it's a little more difficult for the rest of the family. After the family goes to sleep before Christmas morning, each of the kids has a holiday-themed dream:
First, Bart finds himself taking the Polar Express train to the North Pole where he encounters the elves working in preparation for Christmas Eve. Bart eventually faces Santa Claus (portrayed by Krusty) in hopes of getting a much-desired dirt bike for Christmas.
Second, Lisa dreams of a life in 1944 when Marge is away fighting in World War II. Because she was drafted while buying a Christmas tree, Lisa is reluctant to have another one in the house until her mother returns. But she has a change of heart when she finds herself at the tree lot and sees the same tree Marge purchased before leaving and it's remade in her image, leaving Lisa to take it home to serve as hope her mother will return home, which is certain as she carries out a plan to kill Hitler and some Nazis, similarly seen in Inglorious Basterds
While the others are sleeping, Marge writes a letter to Martha Stewart, who comes to Springfield and decorates the house in her own Christmas theme. But alas, this turns out to be a dream as well, as Homer and the kids present her with breakfast in bead, only to screw things up and decide to go out to eat.
Lastly, Maggie has a Fluppets-like (parody of The Muppets) dream of the family preparing to go on a Hawaiian vacation for Christmas, leaving Moe as their housesitter. However, he invites Katy Perry (guest-starring as herself in live-action) over, and the Simpsons' departure is further delayed by Mr. Burns, who catches Homer in the act of lying out of work to take the vacation. Fortunately, Katy is able to brighten their holiday.moreless