Their goal is to grab a wight and bring it back to show Cersei so that she will finally believe that the forthcoming invasion of the White Walkers is really happening and not just a ploy by her enemies.
It’s a desperate plan with relatively slim odds of success without the group potentially taking some heavy losses.
Game of Thrones is nearing the end of Season 7, and all signs point toward the Great War against the White Walkers and their wights beginning sooner rather than later.
Last week’s “Spoils of War” ended with Jon Snow taking a ragtag team of characters from across the Seven Kingdoms on a mission beyond the Wall.