Remember that TV holiday film from "Scrooged"? You know, "The Day the Reindeer Died"? Well, someone missed the sarcasm and they have attempted to make it as a theatrical film. Instead of Lee Majors as the hero, we get Dwayne Johnson. It's probably because he lacks the irony skills for the snark required by the script, "The Rock" gets supplemented by Chris Evans. Now if they could just keep their tongue in cheek, this could be fun. Unfortunately, they can't and it isn't.
Casting J.K. Simmons as a fit and upbeat Santa is a great first decision. Taking him off screen for ninety percent of the movie was not. Simmons was the best thing this movie had going for it. At the start, he delivers the right kind of humor and the fresh take on Santa, that could make this work. The problem is the plot takes over, and it is essentially a straight comic book adaptation, complete with CGI villains at the climax. There are a couple of fresh points along the way, but they are so infrequent and they get sidetracked, that the fun to be had there gets lost.
As hard as it is for me to say, the weak link here is Johnson. As the loyal major domo of Santa, he is getting set for the last Christmas before he retires. You know it is not going to go well when anyone says "this is my last..." whatever, because it will either be literally true when the character dies, or the events in the story will discount the declaration of being finished completely. So no suspense her, Dwayne Johnsons character Cal, does not die. Instead, he gets to run up against a number of obstacles that he must overcome to save Santa and Christmas. Evans as Jack O'Malley, a cyber hustler who has helped the bad guys inadvertently by locating the secret North Pole location of Santa. Which makes no sense because every kid knows Santa is at the North Pole. Why does the antagonist, who also has history with Nick (that's Santa for those who don't get it) need Jack to locate Santa's factory town? So that Johnson can have a wise guy sidekick to trade quips with during the action.
The movie started out with a promising set up and fun characters, but the more it gets into the actions of the plot, the less interesting it became. The one exception was a detour into Krampus world, where for most of the segment, we get back to having a good time. The mythos here was sort of interesting, and they played with it a little bit. Cal and Jack become Sam and Dean from Supernatural for a few minutes, but it doesn't last.
The wrap up at the end attempts to return to a schmaltzy sentimentality that the film eschews for most of it's runtime. That's too bad because the schmaltzy stuff is really what we want in a Christmas Movie. So you can put this on the shelf with "Santa Claus: The Movie" and "Jingle All the Way". It is a shiny bauble that someone poured a lot of money into making, but they forgot to make it charming and relevant. This years lump of coal in your stocking.