One Christmas, Darby and Buster spend the evening at Winnie the Pooh's house with their friends from the Hundred Acre Wood. Playing outside, Roo and Lumpy the Heffalump find a red sack, and a reindeer named Holly stuck in a thicket patch. Holly explains that she is one of Santa's reindeer, and she's looking for Santa Claus' magical sack after it fell off of his sleigh during a practice run. Roo and Lumpy have the sack, but Holly doesn't know how to get home.