I stumbled across this, and it seems very plausible. It wouldn't surprise me if a lot of it turns out to be accurate.

Here is the link: LINK

Here are the main bullet points:

The North

“Sansa ends up meeting Baelish at the town outside Winterfell. Brienne goes with her. Baelish apologizes for allowing her to marry Ramsay. Sansa accuses Baelish of knowing about Ramsay and basically says she doesn’t want anything to do with him any more.”

“Jon does become King of the North. This is after a teenage girl who is head of some house (with like 60 soldiers) speaks up about how she trusts the Starks and was one of the only ones to follow them into battle. Then the other houses speak up and apologize about not following them and they don’t care that he is a bastard.”

“The recruiting scene is pretty funny as Jon, Sansa and Davos make these great speeches on why she should join them only to find out she has less than 100 men. Don’t think Sansa legitimizes Jon but she is agreement that he should be King.”

“Ramsay and Jon meet across the battlefield. Ramsay releases Rickon and tells him to run toward his brother. As Rickon runs, Ramsay starts shooting arrows up in the air one at a time that keep missing him. Jon starts galloping toward Rickon but just as he reaches him, one of Ramsay’s arrow hits him and he dies in Jon’s arms. Sansa is the smart one. She tells Jon before the battle that Rickon is already dead.”

“Jon chooses to imprison Ramsay rather than kill him.” (Rumour though is that Ramsey is eaten by his dogs in the next episode)

Bran North of the wall

” You will soon learn how Hodor came to be. The White Walkers attack Bran and company and Hodor will be forced to ‘hold the door’ as they make their escape.”

“Bran has another vision of the tower of joy and we see Lyanna Stark… Lyanna whispers something to Ned before she dies. We then see a baby, and the very next scene we see Jon.”

“Bran has a vision of a bunch of the CotF gathering and doing something. He wakes and then confronts Leaf about creating the White Walkers. She says they did it to protect something. Bran then has a vision of the White Walkers but the Night’s King actually senses him and that’s how the White Walkers learn of Bran’s location and attack. That’s all you see from them this season.”

“… Also we can assume the 3ER dies when the White Walkers attack.”

“Uncle Benjen will come to rescue Bran and Meera. He will accompany them to The Wall before departing. Bran will have one more ‘flashback’ in the finale.”

Iron Islands

“ Euron gets chosen to be the new king because of his plan to marry Dany and enter into an alliance with her to take King’s Landing. Yara and Theon steal their ships instead and plan to enter into an alliance with Dany instead.”

Arya

“Arya will be asked to kill some actress. She refuses and The Waif is given permission to kill Arya.”

quote:
Sansa and Jon start rallying houses to support them in removing the Bolton-rule. Brienne and Pod is sent to the Riverlands to try and get the help from the Tullys. Jon, Sansa and Davos travel to Northern houses. Sansa meets Littlefinger again, and he apologises for giving her to Ramsay, claiming he didn’t know. Sansa wants nothing more to do with him. The Starks only get the support from the Hornwoods, another show-only house and they go to Bear Island and meet w. Lyanna Mormont. She support them, but have very few men to spare as well. During this journey, Davos comes across Stannis’ old camp near Longlake, where Shireen was sacrificed. He finds the wooden stag-figure he made for her / remnants of it or something. He gets very pissed and confronts Melisandre about it. She admits doing it. Not sure what happens next. No mention of Stannis as far as I’m concerned.

The Brotherhood Without Banners is no more apparently. The remnants, led by Thoros of Myr are basicly “theifs of the highway” in the Riverlands or something. Ian McShane’s former knight-turned priest character (along w. several other people) is ambushed by the “Brotherhood”-remnants. One of the men accompanying Ian’s character is The Hound. Not sure if Ian McShane’s character is killed, but several others in their company are killed by the Brotherhood, and the Hound is forced to fight them. He battles Thoros of Myr 1 on 1, and apparently wins.

Arya is sent by the Faceless Men to kill an actress. She refuses to do this for some reason and Jaquen orders the Waif to go after her. Arya kills her and flees Braavos it seems.

Euron is declared king at the Kingsmoot. He wants Dany as queen. Theon and Asha meet up, and they form an alliance, and wants to go against Euron from what I understand. They steal a ship or more (uncertain), and heads for Volantis. They will side w. Daenerys. Euron does little this season. No plunder along the coasts and Oldtown (I think). At least not on-screen.

Bran has a vision about the Children of the Forest “doing something”, whe he awakes, he confronts Leaf or some other Child of the Forest about it, and they explain that they basicly created the Others to “protect something”, but the Others have turned against them or something. Bran also has a vision of the Night’s King and his leutenants (from trailer), and Night’s King senses this (grabbing Bran’s arm) and finds out the location of the cave. The wights attack. Not sure what happens to the Children or the Three Eyed Raven, but a battle occurs, and Bran, Summer, and Meera is barely able to flee. Hodor sacrifices himself to hold the “door”, so they can escape it seems. Wights are after them during their journey down to The Wall. When they are pursued, they are saved by Benjen Stark apparently and taken to The Wall, before he departs again. Bran has a vision when he gets to the Wall, where he sees the last of the Tower of Joy-scene. We see Ned and Lyanna and we see a baby crying. Lyanna whispers something to Ned, that we don’t hear.

There will be no Clegane-bowl this season. Cersei is apparently refused trial by combat, but she sets The Mountain loose on some Sparrows, which he kills. He also smashes Septa Unella. Not sure what happens to Loras or Margery, but Tommen kills himself. He apparently jumps out of a window in the Red Keep. Quyburn kills Pycelle at least (sends his “Birds”).

In the Riverlands, Brienne and Pod arrives in Jamie’s camp. Bronn surprises Pod, with “strangling” him. His way of saying hello. Brienne and Jamie has a discussion in Jamie’s tent. He doesn’t like that she is siding w. the Tullys. She explains the stuff in the North, but we see more of a-hole-Jamie from s.1-2 and he doesn’t believe in the Others, and he is sent to deal w. the Tullys, not the Boltons. Not his problem etc. Brienne goes inside Riverrun to meet w. the Blackfish. Jamie forces Edmure Tully to surrender Riverrun, as he is the lord, not the Blackfish. Blackfish shoots arrows after the Lannisters. A battle ensues inside Riverrun, and Brienne is barely able to escape. The Blackfish is presumably killed off-screen / uncertain in the ensuing battle. Not sure what happens to Brienne.