Jon Arryn, the Hand of the King, is dead. King Robert Baratheon plans to ask his oldest friend, Eddard Stark, to take Jon's place. Across the sea, Viserys Targaryen plans to wed his sister to a nomadic warlord in exchange for an army.

While Bran recovers from his fall, Ned takes only his daughters to Kings Landing. Jon Snow goes with his uncle Benjen to The Wall. Tyrion joins them.

Eddard investigates Jon Arryn's murder. Jon befriends Samwell Tarly, a coward who has come to join the Night's Watch.

Catelyn has captured Tyrion and plans to bring him to her sister, Lysa Arryn, at The Vale, to be tried for his, supposed, crimes against Bran. Robert plans to have Daenerys killed, but Eddard refuses to be a part of it and quits.

As Robb Stark and his northern army continue the war against the Lannisters, Tyrion arrives in King’s Landing to counsel Joffrey and temper the young king’s excesses. On the island of Dragonstone, Stannis Baratheon plots an invasion to claim his late brother’s throne, allying himself with the fiery Melisandre, a strange priestess of a stranger god. Across the sea, Daenerys, her three young dragons, and the khalasar trek through the Red Waste in search of allies, or water. In the North, Bran presides over a threadbare Winterfell, while beyond the Wall, Jon Snow and the Night’s Watch must shelter with a devious wildling.

At the Red Keep, Tyrion plots three alliances through the promise of marriage. Catelyn arrives in the Stormlands to forge an alliance of her own, but King Renly, his new wife Margaery, and her brother Loras Tyrell have other plans. At Winterfell, Luwin tries to decipher Bran’s dreams.

Theon seizes control of Winterfell. Jon captures a wildling, named Ygritte and is given a chance to prove himself. At King's Landing, after the Lannisters send Myrcella off to be married, the people begin to turn against King Joffrey. Arya comes face to face with a surprise visitor. Daenerys looks to buy ships to sail for the Seven Kingdoms.

Tyrion and the Lannisters fight for their lives as Stannis’ fleet assaults King’s Landing.