It's Christmas Eve and little Timmy's letter to Santa was somehow forgotten. So his dog and a mouse desperately try to track Santa down and deliver the letter so Timmy will have a good Christmas. A cute Hanna-Barbera Christmas special that seems to be all but forgotten today. It's corny stuff but enjoyable for what it is. Good voice work from Daws Butler and Paul Winchell, among other fine voice actors like Don Messick. The animation is adequate (it was made for TV, after all). It's also from Hanna-Barbera so you know there's a lot of corny jokes and loud sound effects. Thankfully there is no laugh track but you don't have to use your imagination to see the spots where it seems room was left for it. There are a number of songs, some of which were reused for later Hanna-Barbera TV specials. This isn't likely to become a new favorite of yours but if you enjoy old animated Christmas specials, it's certainly worth giving a try.