Plot

Jaime entrusts a task to Brienne. Daenerys frees Meereen. Jon is given permission to lead a group of Night's Watchmen to Craster's Keep. Bran and company are taken hostage.

Daenerys easily conquers Meereen and shows just what she's prepared to do to those who defy her. Bronn tells Jaime he is certain Tyrion had nothing to do with Joffrey's death. He visits his brother in his cell and comes away believing the same, but Cersei won't even discuss the possibility with him. Jaime asks Brienne to find Sansa and gives her his new sword, which she names Oathkeeper. Olenna counsels Margaery as to the next steps needed for her to remain Queen. At Castle Black, Jon Snow receives permission to take volunteers 60 miles north to stop their former members who rebelled from talking to Mance Rayder's army. Bran is taken prisoner by Karl Tanner and the mutineers who have taken over Craster's Keep. The identity of Joffrey's killers is revealed.—garykmcd

Scorned by vengeance-obsessed lover Cersei, who demands he helps murder Tyrion, Jaime visits their brother in jail, dares not help either side but continues his fencing and dirty fighting lessons from Bronn and equips Brienne, even with his Valyrian sword, which they name Oathkeeper, sending her to continue her pledged quest to rescue Sansa, whom Littlefinger patiently explains the cynical paradoxes of power opportunism and treason. At Castle Black only the hope of eliminating a potential rival convinces the acting watch commander to allow Jon recruiting a surprising sixty volunteers on his dangerous mission to prevent king Mance finding out their numeric weakness. Boy king in waiting Tommen enjoys an nocturnal visit from his recuperated bride Maergery, into whom Olena confided she had Joffrey poisoned by Petyr. Mutinous Tanner clan chief Karl terrorizes his prisoners at Craster's Keep till Bran reveals being the Stark heir, hence a priceless hostage. In Meereen, Grey Worm and other Unsullied infiltrate to bring slaves weapons and courage for a rebellion, after which masters are brutally murdered as Daenerys's version of "justice."—KGF Vissers

Daenerys easily captures Meereen, assisted by a slave revolt. Seeking justice for 163 slain slave children, she nails 163 masters to the same road posts. At sea, Littlefinger reveals his complicity in Joffrey's death to Sansa. Before leaving King's Landing, Olenna implies to Margaery that she poisoned Joffrey. She urges Margaery to marry Tommen before Cersei can turn him against her. Jaime believes Tyrion is innocent, but Cersei is adamant he is guilty and also orders Jaime to locate and kill Sansa as an accomplice. Jaime instead sends Brienne to find and protect Sansa, presenting her with new armor, his Valyrian sword, horses and Podrick Payne as her squire. In the North, hoping to eliminate Jon, Alliser Thorne and Janos Slynt agree to allow Jon to lead the expedition against the mutineers. Unknown to Jon, the mutineers have captured Bran and his companions. Further north, a White Walker takes Craster's last newborn son to a secret ritual site where he is transformed into a Walker.

Missandei continues to teach Grey Worm the Common Tongue, the language of Westeros. Grey Worm and other Unsullied infiltrate the city, arm the slaves and incite a slave uprising that leaves Daenerys in control of the city. Despite Barristan's suggestion to offer mercy, Daenerys orders 163 masters crucified as justice for the 163 slave children crucified along the road to Meereen.

Jaime visits Tyrion in his cell and tells him that Cersei is still searching for Sansa.

Olenna prepares to return to Highgarden and implies to Margaery that she had a hand in Joffrey's death to protect Margaery from his cruelty. She also suggests that Margaery ingratiate herself with Tommen to curtail Cersei's influence; at night, Margaery visits Tommen in his chambers to discuss their marriage.

Jaime sends Brienne to find and protect Sansa and gives her armor and his Valyrian steel sword, which she names "Oathkeeper", and Podrick as her squire.

On the way to the Eyrie, Petyr tells Sansa that he plans to marry her aunt Lysa. He tells her that Joffrey's death will help him and his new allies grow strong, referring to House Tyrell, and that the missing stone in her necklace contained the poison used for the murder.

Slynt convinces Thorne to send Jon to kill the group at Craster's Keep, as Jon may be killed and not become Lord Commander. Jon gathers volunteers to join him, including Locke who arrived as a new recruit.

Karl orders Rast to give Craster's last son to the White Walkers. Bran's group hears the baby's cries and are captured by the mutineers when they investigate. A White Walker retrieves Craster's son and brings him to a fortress in the Lands of Always Winter, where their leader, the Night King, transforms the baby into a White Walker.