Arya Stark reunites with Hot Pie, who informs her that Jon is King in the North and the Boltons are dead. She abandons her mission to kill Cersei and heads home. En route, she has a brief, bittersweet reunion with her direwolf, Nymeria.
Cersei rallies lords, including Randyll Tarly, by stoking fear of Daenerys’s "foreign" army. Qyburn reveals the "Scorpion," a massive ballista designed to kill dragons. Major Climax: Battle of the Narrow Sea Game of Thrones – Season 7 Episode 2 “Stormborn”
Daenerys holds a council with her allies—Yara Greyjoy, Ellaria Sand, and Olenna Tyrell. Despite pressure to attack King’s Landing directly with dragons, Daenerys accepts Tyrion’s plan: a siege of the capital using Westerosi forces (Dornish and Tyrell) to avoid appearing as a "foreign invader" while the Unsullied attack Casterly Rock.
Samwell Tarly attempts a forbidden, agonizing treatment to cure Jorah Mormont’s grayscale by surgically removing the infected skin.