Yea but that plot is interesting, because it was in the very first Season, before Ned went to KL when the White Walker killed the nobleman and send the NW guy south. It's been probably 3-4 years since then? And the white walkers have had a huge fight with the NW at the Fist of the First Men, now a huge fight with the Wildlings at Hardhome, chased Sam towards the wall.. but ... apparently they went back home and camped out for years between these endeavors, despite having a massive zombie army. Where the fuck are they? Why have they not come to the wall, in the YEARS since the battle at the Fist of the First men? The humans rode back to the wall in days, or at most a couple weeks. But the army of the undead can't find the way down there in years?