Christmas Eve takes a twisty turn when the Boss Baby accidentally swaps places with one of Santa's elves and gets stranded at the North Pole.

After a vintage Chucky doll turns up at a suburban yard sale, an idyllic American town is thrown into chaos as a series of horrifying murders begin to expose the town’s hypocrisies and secrets. Meanwhile, the arrival of enemies — and allies — from Chucky’s past threatens to expose the truth behind the killings, as well as the demon doll’s untold origins.