The War of the Five Kings is drawing to a close, but new intrigues and plots are in motion, and the surviving factions must contend with enemies not only outside their ranks, but within.

Duplicity and treachery...nobility and honor...conquest and triumph...and, of course, dragons. In Season 3, family and loyalty are the overarching themes as many critical storylines from the first two seasons come to a brutal head. Meanwhile, the Lannisters maintain their hold on King's Landing, though stirrings in the North threaten to alter the balance of power; Robb Stark, King of the North, faces a major calamity as he tries to build on his victories; a massive army of wildlings led by Mance Rayder march for the Wall; and Daenerys Targaryen--reunited with her dragons--attempts to raise an army in her quest for the Iron Throne.

In 1818, high-spirited young Fanny Brawne finds herself increasingly intrigued by the handsome but aloof poet John Keats, who lives next door to her family friends the Dilkes. After reading a book of his poetry, she finds herself even more drawn to the taciturn Keats. Although he agrees to teach her about poetry, Keats cannot act on his reciprocated feelings for Fanny, since as a struggling poet he has no money to support a wife.

Eight London couples try to deal with their relationships in different ways. Their tryst with love makes them discover how complicated relationships can be.