-Jon kicking Melisandre out of Winterfell comes back to bite him in the ass somehow. I'm not sure how, but if you have a hot witch on your side, you don't exile her or else she's gonna do something crazy to harm him.
-Cersei hears of Jon Snow being celebrated as "King in the North" and is naturally not very happy about it. She tries to do something to quell the revolution, but this time she doesn't have that weasel Walder Frey on her side to do her dirty work. She's gonna have to get creative to try to tear down the Starks again.
-Arya, fresh out of her assassin training and working to check names off of her list, uses her face-changing powers to make an assassination attempt on Cersei. She gets captured, arrested and requests a trial by combat. The Hound, big softie that he is, decides to fight on Arya's side. The Zombie Mountain, of course, fights in place of Cersei. CLEGANE BOWL BACK ON!
-Daenerys makes her way across the narrow sea and we see an epic battle between her fleet and the crown's army in King's Landing. Something similar to the Blackwater battle from season two ensues, except I think Dany ends up on top.
-Bran somehow communicates with Jon about his true parentage, and we get some angsty yelling from Jon.
*These are all probably wrong. The writers of this show are a lot smart/more creative than I am, and they probably have something even better planned than what my small brain can think of/what I can find on Game of Thrones reddit.