As we can see in the promo, this episode is all about Jon (Kit Harington) and the Night's Watch facing off against the wildlings in a battle four seasons in the making. As we were reminded this week, the men at the wall are totally outnumbered, to the point where this fight seems almost hopeless. Will the Night's Watch somehow find a way to succeed?
Want to know more? Sadly, the official synopsis doesn't tell us all that much: "Jon Snow and the Night's Watch face a big challenge."