7 Road to the North Pole

After getting blown off by the mall's Santa, Brian and Stewie travel to the North Pole to kill Santa Claus. They get there, only to find that Santa is sick, the workshop is polluted and lifeless, the elves are inbred mutants, and the reindeer are carnivorous, feral monsters because of all the work Santa does each Christmas. Brian and Stewie promise to deliver the presents for him, but fail at the first stop after being discovered by a family. On Christmas morning, when everyone wakes up with no presents under their trees, Brian explains the problem on Tom Tucker's news station and suggests everyone must shorten their demands to one gift a year to help Santa get better. Everyone agrees to the ordeal, and one year later, the workshop is once again colorful and Christmassy and Santa, the elves, and the reindeer all rejuvenate and everyone gets the gifts they wanted, thanks to Brian's suggestion.