Aurane Waters comes to tell Cersei that Dragonstone is taken. They were about to take it anyway by digging a tunnel under the walls, when Loras came along waving his sword about and got thousands of men killed. Then he got boiling oil poured over himself and is now at death's door. Yet another character is ambiguously dying off-screen; I suppose they can't all live. Cersei takes great pleasure in telling Maergery all this.
She cares rather too much about getting one over on Maergery, and rather not enough about the Septon turning up with 6 armed men complaining about the brothels. Cersei wants to keep the brothels open for the tax revenue and trade benefits. Before long the Faith is going to be using this sort of thing as an excuse to depose her. And they'll have the power to do it, too.
Meanwhile there are more dwarves heads to look at and no real news about Tyrion, though the rumour that he is hiding out in the Riverlands on a haunted hill sounds vaguely plausible. Jalabhar Xho wants men to retake Red Flower Vale, wherever that is. The Guild of Alchemists wants to try to hatch dragons' eggs from Dragonstone. Cersei has the idea of setting up her own bank. Tommen is getting bolshy about being king so Cersei has him whip the whipping boy. Lady Tanda had died leaving Bronn the heir of her castle. Qyburn is still torturing Falyse.
Cersei dreams about the prophecy she got from the witch, who Pycelle says was a Meagi. Dany has had trouble with them, so we know it is serious. She correctly predicted that the Cersei's children would not be Robert's children, and also that Cersei would be replaced by a younger queen and killed. Will it be Maergery as Cersei thinks or will it be Dany? In any case, Cersei is cooking up some new scheme to get rid of Maergery involving Boros Blount and Osney Kettleblack.