Game of Thrones Season 3 will be based on A Storm of Swords, the third novel in the A Song of Ice and Fire book series from author George R.R. Martin. Due to the sheer length of the third novel, which is roughly 1.5 times the size of the first novel, the events of A Stomr of Swords will be split over two seasons. The cruel reign of the boy-king Joffrey Baratheon continues thanks to an alliance with House Tyrell. King of the North Robb Stark must decide whether to remain in the field against the Lannisters or return to Winterfell and address the actions of a traitor. Bran Stark journeys across a frozen wasteland to reach The Wall and what lies beyond. Daenerys Targaryen searches for an army to take back her homeland. Jon Snow must navigated dangerous waters filled with White Walkers and the bloodthirsty wildlings of the King-Beyond-the-Wall Mance Rayder.