Game of Thrones Season 8, episode 2, is called "A Knight of the Seven Kingdoms," but it might as well be called "the calm before the storm." The episode takes places entirely at Winterfell as everyone prepares for the fight against the army of the dead. It's a lot of setup for the big battle waiting the warriors.
“My name - my real name - is Aegon Targaryen.”
Just like that, Jon shatters Dany's world. Her belief that she is the rightful heir to the Iron Throne has fueled her entire story arc on Game of Thrones and, in an instant, she realizes she is not. As she tells Jon, he's the last male heir, which invalidates her claim to the throne. Something like anger flashes across her face - and then the White Walkers show up.
Brienne of Tarth has a new title: Ser Brienne of Tarth. While sitting around a fire with Jaime, Tormund, Tyrion, Davos, and Podrick, Brienne mentions that women can't be knights. When Tormund asks why, Brienne replies, "Tradition."
But, faced with near-impossible odds against an army of the dead, it doesn't seem like tradition matters too much anymore. Jaime bestows the honor upon Brienne, making her a knight - the first woman knight that we know of, to boot.
Jaime arrives at Winterfell, asking to fight with their army. Daenerys is suspicious, mainly because he has shown up alone - and he confirms that Cersei's army isn't coming. Tyrion defends his brother, which only makes Dany angrier.
Finally, Brienne vouches for Jaime, Sansa declares she trusts Brienne, and Jon sides with his sister. Daenerys isn't happy.
While Jon, Dany, Sansa, and a few others are laying out a strategy for fighting the White Walkers, Bran speaks up from the corner of the room. He says that the only way to draw the Night King out is to use himself as a trap. Bran knows the Night King wants nothing more than to kill the Three-Eyed Raven, so that all Westerosi history is destroyed.
Bran says he'll wait in the Godswood, and Theon, who showed up with a few other Iron Born soldiers, volunteers to guard him.