While Fluffy is dreaming about apprehending Christmas grinches, Ms. Day's class makes Christmas cookies that look like Fluffy. He misunderstands, though, and tries to attack them! Then, for the holiday vacation, Fluffy stays with Jasmine, and they visit Santa together. Again, Fluffy is confused and disappears into Santa's suit in search of his present, only to reappear on Santa's head!
At last, Christmas Eve arrives, and Fluffy listens to the story of the Night Before Christmas. While dreaming that night, Fluffy is asked by Santa to deliver his presents for him because the reindeer are sick. Fluffy calls on all of his fellow guinea pigs, and they all preserve the magic of Christmas. Just then, Fluffy is awakened on Christmas Day to his present: a big, juicy carrot!