From the battlements at King’s Landing, Jaime and Bronn survey the formation of Unsullied and Dothraki outside the city walls. Tyrion, Jon, and the rest of Dany’s supporters sail to the capital on Daenerys’ flagship; below deck, the Hound inspects the locked crate containing the captured wight.
Bronn arrives with Brienne and Podrick to escort Daenerys’ assembly to the meeting site, the abandoned Targaryen dragonpit. Pod, Tyrion and Bronn use the walk to reconnect. Brienne falls in step with the Hound and informs him Arya is alive and safe at Winterfell. The guests collectively enter the pit, and take their sides.
Cersei enters the arena with her entourage. The Hound immediately recognizes his brother. All eyes remain on the queen as she heads to her seat, throwing Tyrion a look of complete hatred on her way. Cersei asks impatiently after Daenerys as the sound of wings grows louder. Daenerys makes her entrance astride Drogon; Rhaegal circles in the air. All parties present, Tyrion begins but is interrupted by Euron’s taunting. Cersei quiets the Ironborn king, and Tyrion continues: They will never see eye to eye, but on one point they must. Jon lays out the situation, “There is only one war that matters: the Great War. And it is here.” To emphasize the seriousness of the problem, the Hound unlatches the crate.
The wight springs forward, heading straight for Cersei. The queen recoils, as the Hound jerks the wight back on its chain. He slices the creature in two. Qyburn, fascinated, picks up the wight’s still-moving arm. Jon demonstrates how fire and dragonglass can stop the wights. Confirming the creatures can’t swim, Euron announces he plans to sail to the Iron Islands and wait out the war, and suggests Daenerys do the same: “When winter’s over, we’ll be the only ones left alive,” he says and exits.
Denouncing Euron’s cowardice, Cersei accepts the offer of a truce, on one condition: Jon Snow must promise not to choose sides. Honest to a fault, Jon shocks everyone by confessing he has already pledged himself to House Targaryen. “Then there is nothing left to discuss,” remarks Cersei, leaving. Brienne stops Jaime on the way out, advising him to forget loyalty and convince his sister to change her mind.
Tyrion and Daenerys are grateful for Jon’s pledge, but everyone agrees his decision not to lie caused more harm than good. With only one option left, Tyrion heads to speak to Cersei. Jaime waits outside as his little brother enters the queen’s office. Cersei and Tyrion discuss all there is between them: their father’s murder and how his death exposed the family; Tyrion’s sorrow for Myrcella and Tommen. The queen refuses to acknowledge Tyrion’s grief, and won’t accept her brother isn’t out to destroy the family. Exasperated, Tyrion suggests Cersei just end him there, but she does not. As she speaks of the Northern threat, Tyrion notices Cersei’s subtle gestures over her stomach and realizes she’s pregnant.
As they wait for Tyrion to finish with Cersei, Dany looks over the dragonpit, and discusses her family history with Jon. She tells him about the witch’s prophecy that she will have no children, and he teases her about this “reliable source of information.” The levity ends when Tyrion returns ... followed by Cersei and her Queensguard. The Queen of the Seven Kingdoms declares the Lannister armies will march alongside the rest and fight the Great War.
Studying the Dragonstone map, Jon, Daenerys and company determine their plans to head north. Daenerys decides to sail with Jon to send a clear message of alliance to the Northerners. The meeting over, Theon catches up with Jon in the audience chamber. Theon confesses he has always wanted to do the right thing, but felt trapped in his allegiance to both the Starks and the Greyjoys. Feeling sympathy despite his anger, Jon tells Theon he doesn’t need to choose. Theon realizes he has to try to rescue the one person who once tried to rescue him: Yara.
Theon tells the remaining Ironborn they are going after his sister. Harrag -- the Ironborn who voiced his disgust at Theon’s decision to flee from Euron’s attack -- confronts him in a brutal fight, but Theon gets back up each time he’s knocked down. Finally, Theon tackles the large man to the ground and beats him senseless. The Ironborn follow their prince to the sea.
Cersei calls Jaime away from the Lannister generals to reveal her commitment to fight in the north was a lie. Jaime is shocked, and tries to rationalize with her -- even if they wait out the Great War they cannot beat Daenerys and her dragons. Cersei points out one dragon was missing from Daenerys’ display, and so the beasts must be vulnerable. Furthermore, they have the Iron Bank on their side. She reveals Euron’s exit from the meeting was a ploy; he is sailing for Essos to collect the Golden Company whom she has hired as mercenaries. Incensed by her duplicity, Jaime tells his sister he plans to keep his pledge. He dares the woman he loves to order him killed as he walks away.
No longer in his Lannister armor, Jaime rides a horse northward as snow begins to fall across King’s Landing.
A lone raven struggles through the blizzard and heads towards Winterfell. Inside Jon’s office, Sansa discusses the new scroll with Littlefinger -- Jon has bent the knee to Daenerys Targaryen. Littlefinger points out both rulers are young and unmarried, and an alliance would make sense. “He was named King in the North. He can be unnamed,” he suggests. Sansa argues Arya, now a trained assassin, would never agree. Littlefinger suggests she play a little game: assume the worse when assessing a person’s motives. He slowly coaxes Sansa to conclude Arya may have set her sights on becoming Lady of Winterfell.
Sansa has Arya brought to the Great Hall. Bran sits beside his oldest sister at the high table, while Lord Royce, the Knights of the Vale, and Stark soldiers line the room. Littlefinger watches the proceedings leaning against a wall. Sansa declares the charges are of murder and treason, then turns to Lord Baelish to answer the accusations. Littlefinger, caught off guard, struggles to defend himself. Sansa rattles off his crimes -- the murder of Lysa Arryn, conspiring to murder Jon Arryn, betraying Ned Stark, and initiating the conflict between the Starks and the Lannisters. Littlefinger denies it, until Bran recalls the exact words Littlefinger said as he held a knife to Ned’s neck: “I did warn you not to trust me.” Sansa thanks Littlefinger for the lessons he has taught her, and Arya steps forward to slits his throat with her Valyrian dagger.
The storm having passed, Arya and Sansa stand on the Winterfell battlements, remembering their father together.
Sam and his family arrive at Winterfell. Sam approaches Bran who tells him he is now the Three-Eyed Raven and can see everything. Bran shares Jon must be told he is not a Snow, but a Sand -- the bastard child of Lyanna Stark and Rhaegar Targaryen. Sam, realizing that isn’t correct, reveals the contents of Septon Maynard’s diaries: Rhaegar’s marriage to Elia Martell was annulled, the septon married Lyanna and the Targaryen prince in secret. Using his sight, Bran watches the wedding, and realizes the two were in love; the rebellion was built on a lie. He returns to Jon’s birth at the Tower of Joy and listens as Lyanna whispers to Ned the name of her son, “Aegon Targaryen.”
As Daenerys’ flagship sails north, Jon knocks and enters Dany’s chambers. The pair make love. From the hallway, Tyrion sees the door close before returning to his own room.
A horn blasts three times. Emerging from the frozen forest, the Army of the Dead arrives at Eastwatch. Tormund and Beric watch in horror as the Night King, riding Viserion, uses the dragon to blast blue fire at the icy Wall. Pieces of the Wall begin to collapse, as Tormund and his wildings rush to safety. The ice dragon continues until a breach opens, wide enough for the massive army to walk through into the realms of men.
Daenerys, Jon, Cersei and their councilors converge at the meeting, where the wight is presented as proof. Cersei demands Jon's neutrality in the war with Daenerys. He refuses due to his recent oath, provoking Cersei to leave. Tyrion apparently convinces her for the alliance. After earning the respect of his men, Theon leads them to rescue Yara. Cersei reveals to Jaime that she actually intends to let Danaerys and Jon fight the Dead and defeat the winning side using the Golden Company of Braavos. Jaime gets angry with the decision and deserts her. Jon and Danaerys develop romance. At Winterfell, Baelish apparently convinces Sansa for Arya's execution. The trial is revealed to be intended for Baelish, whom Arya executes for his crimes against Houses Stark and Arryn. Samwell arrives and learns from Brandon about Jon's parentage. The former reveals that Rhaegar and Lyanna were secretly married after he annulled his marriage with Elia. It is confirmed when Brandon looks into the vision, learning that Jon is a trueborn Targaryen named Aegon, and the heir to the Iron Throne. The Dead arrive at Eastwatch, which the Night King destroys using Viserion, opening the way for the army to the south.
At King's Landing, Daenerys, Jon, Cersei and their councilors converge at the Dragonpit for the meeting, where the wight is presented as proof. Cersei demands Jon's neutrality in the war with Daenerys. He refuses due to his recent oath to Daenerys, provoking Cersei to leave. Tyrion talks to Cersei, apparently convincing her to commit to the alliance. Cersei reveals to Jaime that she has no intention of sending her soldiers to help Daenaerys and Jon fight the Dead, instead opting to defeat the winning side using the Golden Company of Braavos. Disgusted, Jaime deserts her and rides north. Jon and Daenerys sleep together. At Dragonstone, Theon earns the respect of his men and leads them to rescue Yara. At Winterfell, Littlefinger discuss Arya's threatening demeanor with Sansa. Sansa assembles a trial in front of the northern lords and the Vale, but names Littlefinger instead of Arya. Arya executes Littlefinger for his crimes against Houses Stark and Arryn. Samwell arrives at Winterfell and meets with Bran, discussing Jon's parentage. Bran realises that Jon is a trueborn Targaryen named Aegon, and the heir to the Iron Throne. At Eastwatch, the Night King arrives with an undead Viserion and destroys a portion of the Wall, allowing the Army of the Dead to march south.
Grey Worm stands in front of thousands of Unsullied before the walls of Kings Landing. Bronn and Jaime watch from the walls as they prepare burning oil. A horn sounds, the Dothraki riders gallop forward to the foot of the walls. A ship approaches Blackwater Bay, Tyrion Jon and Davos look at Euron's impressive fleet. The Hound checks the box holding the Wight in the hold. Cersei gives orders to The Mountain to kill everyone if everything goes sideways. A neutral spot has been chosen outside Kings Landing. Everyone walks to the site, an abandoned dragon gladiator arena. Tyrion greets Pod. Brienne and Sandor chat as friends. Bronn and Tyrion also chat, Tyrion offers twice his pay, Bronn laughs it off. Bronn takes Pod off for a drink. Cersei arrives with the Mountain, Euron, Qyburn and Jaime and a retinue of soldiers. Sandor greets and threatens his brother. Cersei asks about Daenerys,who makes a dramatic entrance by dragon. They all sit. Euron immediately threatens Tyrion and is told to sit. Jon broaches the subject of the Night King's Army but Cersei is suspicious. The Hound releases the Wight, it charges at Cersei, it is cut in-half then an arm is cut off which remains animated Jon demonstrates the two ways to kill them, fire and dragonglass. Euron announces he is leaving, the worst thing he has ever seen. Cersei agrees to the Truce, but only if Jon stays in the North. Jon announces he has already pledged to Queen Daenerys. Cersei says no deal, then leaves. Brienne tries to get Jaime to change Cersei's mind. Tyrion, Dany and Davos are upset with the timing of Jon's announcement, he declares he cannot lie. Tyrion says he must go talk to Cersei alone. Tyrion goes to the Red Keep and has a forlorn talk with Jaime first, then goes to Cersei's quarters, followed by the Mountain. The bitterness between the two erupts, Tyrion dares her to say the word and have him killed, she cannot; he pours himself a drink, and gives her a glass. As they talk, Tyrion realizes Cersei is pregnant. Jon and Dany talk back at the arena.They realize things look bad for them if Cersei doesn't agree. Then, Tyrion returns followed by Cersei. Cersei announces she will now join them and march her army North, without any promises in return. In Winterfell Sansa is dismayed at not hearing from Jon. Baelish suggests Jon and Daenerys will likely form a relationship of sorts. They talk about Arya, Littlefinger plants a "worst case" seed that Arya is there to kill Sansa. At the War Council Jon stresses the need to be seen together with Daeneyrs, against Jorah's advice she should fly alone. Theon meets Jon in private, puzzled why Jon didn't lie. Theon is despondent and Jon forgives him and stresses he was still raised by Ned Stark, they both were. On the beach Theon tries to get the remnants of Yara's sailors to go and rescue her. He fights the big Lieutenant, badly beaten he finds strength and manages to win. The other men accept him as the leader, "for Yara". Sansa has Arya brought to her, in a room full of soldiers. Sansa then accuses Littlefinger of murder and treason. Stunned, he attempts to talk himself out of trouble. Sansa points out Baelish killed Lady Arryn and conspired to kill Ned Stark. Desperate, Baelish begs for his life, on his knees, Arya slashes his throat with the Valerian dagger. Cersei interrupts Jaime organizing his Generals, she reveals the truce was a ruse, she has no intent to support Dany and Jon. Jaime is furious. Cersei suspects something happened to one dragon and refers to a mercenary company of 25,000 sellswords in Essos. Euron Greyjoy is on his way to pick them up. Jaime announces he will go north, and dares her to stop him. Snow begins to fall in Kings Landing. Bran sits by a fire, Sam knocks and enters. Bran asks why he came. They start to talk of Jon's parents Rhaegar and Liana Stark, with Sam's knowledge of the annulment, together they realize Jon is the legitimate heir to the Targaryeon throne. On the ship Jon and Dany make love, Tyrion watches the room deep in thought. Arya and Sansa reflect and grow closer. Brann is in a trance warging in a raven. At EastWatch Tormund looks out at the Wilds. The wights and WhiteWalkers march out of the forest toward the wall. Out of the sky the Night King rides a dragon, spewing blue flame the wall begins to crumble. Breached, the army of the dead marches into the land of the humans.