The Baratheon rivalry ends, drawing different reactions from Catelyn and Littlefinger; Tyrion finds Joffrey's defense plan at King's Landing lacking, but also learns of a mysterious secret weapon; Theon continues to prove himself to his father by sailing to the Stony Shore; Arya gets a promise from Jaqen H'ghar; the Night's Watch regroup at an ancient fortress called the Fist of the First Men.