As a one-off, unrelated to any franchise Special (it's also nothing to do with the 1983 movie with the same title) it's clear that A Christmas Story has fallen into massive obscurity. Quite rightly so, as it's a fairly bland story with nothing memorable about it whatsoever.
It begins in some quaint, little, snow-covered town with little Timmy being read to by his dad on Xmas Eve. But he's forgotten to mail his letter to Santa, so the dog and house mouse take off in search of the big-bearded gift-giver (who conveniently just happens to be down the street instead of anywhere else in the world) in order to give him said letter.
Limp hijinks follow. And it ends with a total cop-out, borderline illogical ending which pretty much negates everything that precedes it. But I guess I'm scrutinizing a 1972 Hanna-Barbera cartoon a little too closely.
Forget this one, and stick to Specials based on established franchises.