summary from http://en.wikipedia.org/wiki/The_Climb_(Game_of_Thrones)
In King’s Landing
Lord Tywin Lannister (Charles Dance) meets with Lady Olenna Tyrell (Diana Rigg) to discuss having Ser Loras (Finn Jones) marry his daughter, Cersei (Lena Headey). They trade barbs about Cersei’s age and accusations of incest with Jaime, as well as Loras’s well-known homosexuality, before Tywin threatens to make Loras a knight of the Kingsguard, an order which renounces their right to inheritance and marriage. Olenna relents, and consents to the marriage of Loras and Cersei.
Sansa (Sophie Turner) tries to get acquainted with Loras. Closely watching the situation, Cersei and Tyrion (Peter Dinklage) compare their impending marriages before Tyrion accuses his sister of trying to have him killed during the Battle of the Blackwater. Tyrion deduces that it was in fact Joffrey (Jack Gleeson) who ordered Ser Mandon Moore to kill him, but Cersei tells him his life is not in danger from Joffrey, now that Tywin is the Hand. Tyrion then goes to Sansa’s chamber, where he reveals to her and Shae (Sibel Kekilli) that she will be wed to him, and not Loras. Elsewhere, Lord Varys (Conleth Hill) finds Lord Baelish (Aidan Gillen) in the throne room. Baelish tells Varys that he is aware of Varys’s arrangement with Ros (Esme Bianco), and that he has given her to Joffrey, who has killed her with his crossbow.
In the Riverlands
Anguy (Philip McGuinley) teaches Arya (Maisie Williams) how to use a bow. Arya spots someone behind her target, which is revealed to be Melisandre (Carice van Houten) and a small group of Stannis’s men. She speaks to Thoros (Paul Kaye) in Valyrian before he takes her inside the Brotherhood’s hideout. Melisandre is shocked when she learns of the six deaths of Beric Dondarrion (Richard Dormer), who asks her why she has come to them. Melisandre says the Brotherhood has someone the Lord of Light needs, and soon after has her men take Gendry (Joe Dempsie) into her custody. Arya is angered and disgusted on discovering that the Brotherhood’s turning over of Gendry was partly motivated by money, as Melisandre has paid them off. Arya confronts Melisandre and accuses of her of being a witch, to which she replies that they both will meet again in the future.
King Robb (Richard Madden) and his advisors meet with Lothar (Tom Brooke) and Black Walder Frey (Tim Plester) to discuss an alliance for his planned attack on Casterly Rock. The Freys carry Walder Frey’s demands for an alliance, which includes a formal apology from Robb, the castle Harrenhal and all of its lands and incomes, and for Edmure (Tobias Menzies) to marry Roslin, one of his daughters. Edmure is reluctant to marry a woman he has never met, but is eventually convinced by the group to go through with the arrangement.
At Harrenhal, Lord Roose Bolton (Michael McElhatton) has dinner with Jaime (Nikolaj Coster-Waldau) and Brienne (Gwendoline Christie). Bolton tells Jaime he will send him to King’s Landing on the condition that Jaime swear to tell his father that Bolton had nothing to do with his maiming. Jaime assumes that Brienne will accompany him, but Bolton intends to keep her with him, under arrest for abetting treason.
Beyond the Wall
Samwell Tarly (John Bradley) and Gilly (Hannah Murray) stop to camp during their journey to the Wall, after having fled Craster’s Keep. Sam shows Gilly the dragonglass dagger he found at the Fist of the First Men and tells her about Castle Black.
At camp at the base of the Wall, the wildling party led by Tormund Giantsbane (Kristofer Hivju) prepare to climb. Jon (Kit Harington) and Ygritte (Rose Leslie) talk about their impending climb and their relationship. Ygritte reveals she is aware that Jon is still loyal to the Night’s Watch, but tells him they must be loyal to each other instead. While climbing, Ygritte strikes the Wall and causes a massive crack, which inadvertently causes an avalanche that kills the rest of the wildling party and leaves herself and Jon hanging by their safety rope. Before Orell (Mackenzie Crook) cuts the rope Jon manages to secure himself to the Wall, saving Ygritte in the process, and they later reach the top of the wall together where they kiss.
In the North
Tensions rise at camp between Osha (Natalia Tena) and Meera Reed (Ellie Kendrick) before Bran (Isaac Hempstead-Wright) defuses the situation. Jojen (Thomas Brodie Sangster) experiences a seizure while sleeping, and Meera explains they are caused by his visions. Jojen then tells Bran that in his vision he saw Jon Snow with the wildlings.
Elsewhere, the cleaning boy (Iwan Rheon) awakens Theon (Alfie Allen) to continue torturing him. The boy threatens to remove Theon’s pinky finger if he cannot guess the boy’s true identity and their current location. After several attempts, Theon guesses that the boy is a Karstark. The boy acts for a moment as if the guess was right, but he begins flaying Theon’s finger, telling him that he was lying. Theon eventually gives in and begs his torturer to remove his pinky.