It's Christmas time and Santa has just finished his worldwide deliveries, when an unthinkable tragedy strikes! His most trusted reindeer, Marshmallow, has forgotten an entire planet! Now Santa must travel through space bringing presents to distant aliens all the while steering clear of his evil brother who intends to stop him from succeeding!

When the universe's highest-flying dogs warp into outer space, Skyfetcher and Spaceslobber get a call from canine headquarters! It seems an unknown force is attacking unsuspecting planets, and it's up to them to root out the source of the trouble!