What Happens Now That the White Walkers Have Moved Beyond the Wall?
Then, of course, we have the White Walkers to contend with. The fact that they've officially made it to Westerosi territory is terrible, especially now that it's started to snow in King's Landing. Time is very, very limited. It's safe to assume the undead army will wreak havoc up in the North first. If they make it to Winterfell before Jon returns with the Dragonglass and Daenerys's reinforcements, Arya and Sansa could be in huge trouble.