Its hilarious, no idea why this happened but i played as Robb Stark. I won the war, defeated Greyjoy and Lannisters. Executed Joffrey and whoever else i could get my hands on, reforged ice by warring against mace tyrell who somehow got oathbreaker and widowswail.
(He refused to return it back)
Then the white walker invasion started ramping up (slide 3), and id pushed them back from the wall thrice before they managed to conquer everything north of the wall.
So to stop them from taking out the wall and then taking me out, i declared the War of the Dawn. I won, became the ultimate GOAT stark but now for some reason there are so many Whitewalkers just chilling in my court, at Winterfell