They're held up by pounding rain, lateness which will likely make the nasty Lord Frey even nastier. (He's already mad that Robb ditched his daughter for Lady Talisa.)
In the capitol city, Sansa is standing round being her usual pathetic self, upon learning she must marry Tyrion.
"I’m stupid, a stupid little girl, with stupid dreams who never learned," she says. (True.)Tyrion isn't terribly excited about it, either, he says.
"Shae isn’t going to like it," he says. (Also true.)
Bronn calls this bluff. "You want to f--- that Stark girl," he says. "You just don’t want to admit it."
Meanwhile, the boy-king Joffrey is sitting around whining that his grandfather, Tywin Lannister, is holding small council meetings in the Tower of the Hand, and the His Grace would have to walk up a lot of steps to get there if he ever were to attend.
"We could arrange to have you carried," Tywin sneers at him.
Joffrey is worried about Daenerys' dragons, but Tywin dismisses the beasts as "curiosities on the far side of the world."
(I hated Tywin in the books; he was a miserable, hateful man. But in the show, I love how he consistently puts Joffrey in his place.)
Melisandre is sailing with Gendry Baratheon past King's Landing, where she reveals to him -- to his astonishment -- that he is Robert Baratheon's bastard son.
"There is power in a king’s blood," she says.
Having freed all the slaves of Astapor, Daenerys is looking to do the same in other neighboring cities.
She and her army march to Yunkai, where 200,000 people are enslaved.
"We have 200,000 reasons to take the city," she says.
(Dany's title is growing in length: She's now "Breaker of Chains" in addition to "Mother of Dragons," "Queen of the Andals," "Khaleesi," etc.)