Although she loves Christmas, Santa’s elf Christine (Summer Glau) wonders if there could be more to life than making toys in the North Pole. When Santa receives an emergency wish from a little boy in Los Angeles, he puts Christine on a special assignment, sending her to L.A. to give the VanCamp family—mom Sara (Eva La Rue), dad Scott (Dan Gauthier), and their two kids Ally (Izabela Vidovic) and Will (Mason Cook)—a holiday wake-up call. Will Christine fail her assignment and be sent back to the North Pole for good, or will the VanCamps come to their senses about the meaning of Christmas?

人类进入宇宙殖民时代后，与强大而好战的圣约人遭遇，圣约人宣称人类亵渎了他们的信仰，对人类发动了全面战争。