S3E1 · Valar Dohaeris

Complete story — includes the ending

After the White Walkers attack the Fist of the First Men, the surviving Night's Watchmen, including Samwell Tarly and Jeor Mormont, pledge to return to the Wall and warn the Seven Kingdoms. Jon is brought before Mance Rayder, the "King beyond the Wall", and pledges his loyalty to the wildlings. Robb Stark finds Harrenhal abandoned by the Lannisters, with its inhabitants slaughtered. He orders his bannerman Roose Bolton to garrison the castle and lead the search for Jaime Lannister. A scarred Tyrion Lannister attempts to negotiate Casterly Rock from his father, Tywin, who offers lesser promises and threatens to hang any whores that he catches his son with. Margaery Tyrell engages in charitable acts with King's Landing orphans. Petyr "Littlefinger" Baelish offers to help Sansa Stark escape King's Landing. Ros warns Shae to distrust Littlefinger. Davos Seaworth is rescued by Saan, who wants to break ties with Stannis Baratheon. Davos returns to Dragonstone where he unsuccessfully tries to kill Melisandre and is imprisoned. She blames him for convincing Stannis not to let her join the battle. In Essos, Daenerys Targaryen arrives in Astapor to buy an army of brutally trained mercenary soldiers called the "Unsullied". The Qarthian warlocks attempt to assassinate her, but Ser Barristan Selmy, a former Kingsguard commander, saves her and pledges his loyalty.