Humanity failed to stop the Night King and his legion of undead. The displeased gods decide it should take a greater role in the fate of humanity. They send the Prince Who Was Promised and a Lannister back to before the war equipped with their memories. Even with the advantage of hindsight, things never go as planned. Jaime meets Brienne Chapter 33

The Battle for Winterfell ends in one, long, night. The victor is not humanity. Bran Stark commits crimes the Children could not have conceived of to give the world a final chance at surviving the Others, and passes the responsibility of saving Westeros to a man nobody would have chosen. Jaime Lannister wakes on the day King Robert comes to Winterfell.

While a presumed-dead Jaime recuperates at Storm's End, Brienne must face the consequences of their time together in Winterfell.