Watch on Philo! - Philo.tv/DTH

The movie kicks off with this kid, Jack. He doesn't believe in Santa and doesn’t think anyone else should either. He tells all of his cousins that Santa doesn't exist and even shows them where their parents are hiding the gifts—very naughty.

Fast forward 30 years, and Jack is now an adult—still very naughty. He's stealing important information and selling it to people on the dark web.

Cut to Santa, who is doing some mall duty. He does this occasionally to remind himself why he does what he does. By his side is Callum Drift, the head of Santa’s security.

When they return to the North Pole, Cal tells Santa that he’s retiring. There’s just too much naughty out there. But there's no time to mourn because Santa gets kidnapped! They suspect it has something to do with the information Jack stole. So they track him down for questioning, and Jack is completely shocked to find out that Santa is real—along with some other mythical creatures.

They hire Jack to help find Santa because Jack is really good at tracking things down. Cal is annoyed that he has to team up with Jack. They track down Ted, the broker who bought the stolen information. Ted reveals that the kidnapper is the winter witch, Grýla. Suddenly, Grýla takes over Ted’s body, warns them, and then sends snowmen to kill them. They manage to fight them off, but not before Ted gets frozen.

They suspect that Grýla may be working with Santa’s estranged brother, Krampus, who originally created the Naughty List. Cal and Jack break into Krampus' lair but are captured and forced to slap-fight Krampus. They discover that Grýla came to Krampus to retrieve a magical snow globe that can imprison people.

Grýla’s plan is to duplicate the magical snow globe and imprison anyone who has ever been on the Naughty List. She decides to test the snow globes on Jack and his son, Dylan, with whom he has a strained relationship.

Cal realizes that the only place capable of duplicating such magic is the North Pole. That means they never actually left the North Pole, and Santa is trapped in a vault that is draining his power.

Inside their snow globes, Jack and Dylan have a heartfelt conversation, which makes them “nice” and causes the globes to shatter.

Grýla is about to take off with an unconscious Santa, planning to use his sleigh to deliver the cursed snow globes—but not if Cal and Jack have anything to say about it! They fight, causing the sleigh to crash-land. This enrages Grýla, who drops her human disguise and goes full giant-witch mode on them.

Luckily, Krampus shows up to save his brother. But Grýla is too powerful. Santa finally wakes up, and with the help of his reindeer, they manage to capture her and imprison her in a snow globe.

Now, the rush is on to deliver all the presents in time. Santa invites Jack and Dylan to join him. As Cal watches them, amazed, he realizes maybe it’s all worth it after all. He tells Santa he’s not going to retire.