Night King will convince Jamie to be his bff and together they will swoop down, snatch Bron, and yeet him into the distance. The things we do for love. Upon learning his new friend loves babies, Jamie suggests they skip the battle and fly off to Kings Landing to see Cersei and the new baby. Turns out the baby is a dwarf.
Back at the battle, Sir Pod the Rod whips out his personal lance and the wights flee in shame and terror. The triumphant Pod turns to regard his comrades and accidentally swipes them all with his blessed blade, killing them all, and collapsing the crypt in the chaos, crushing all those hiding beneath it.