"Based on the television special produced by Lee Mendleson and Bill Melendez."
It's Christmas time again! Lucy and Linus's younger brother Rerun really wants a dog of his own. He can't have Snoopy, so he asks Snoopy's brother Spike to come stay. They have a great time, but Rerun's mom thinks dogs are too much trouble! When Spike goes home to the desert, will Rerun's Christmas be ruined?