Quick recap
Daenerys lands on Dragonstone and starts her war on Cersei. Euron Greyjoy destroys Yara's fleet and captures Ellaria. Jaime takes Highgarden, and Olenna confesses she poisoned Joffrey. Daenerys and Drogon tear through the Lannister army on the road. Jon comes to Dragonstone, asks for help against the dead and leads an expedition beyond the Wall to capture one. Daenerys rescues him, but the Night King kills Viserion. At the Dragonpit, Cersei sees the wight and promises a truce she has no intention of keeping; Jaime leaves her. At Winterfell, Sansa and Arya execute Littlefinger. Bran and Sam work out that Jon is Aegon Targaryen, the trueborn son of Rhaegar and Lyanna. Jon and Daenerys get together, and an undead Viserion brings down part of the Wall.