Shortly after last night's epic episode of Game of Thrones, HBO released a new preview for the fourth episode of this penultimate season, entitled The Spoils of War, airing Sunday, August 6 at 9 PM ET on HBO. Naturally, if you haven't seen last night's episode, The Queen's Justice, there will be plenty of spoilers below, so read on at your own risk. As you can see in this trailer, the war has certainly begun, as Daenerys Targaryen (Emilia Clarke) seemingly takes a bold move. This first look footage also promises one of the biggest reunions the show has to offer at this point, as a quick glimpse of Arya Stark finds her looking out across snow covered woods, eyeing Winterfell in the far distance. It looks like she is finally ready to return home.

The trailer, which comes courtesy of Game of Thrones YouTube, begins with Queen Cersei (Lena Headey) explaining to Tycho Nestoris (Mark Gatiss) from the Iron Bank of Braavos that the only "venture" she's currently involved in is "reestablishing control over this continent and every person on it." Tycho assures Cersei that she can count on the Iron Bank, as soon as the gold arrives. We learned in last night's episode that the Iron Throne is currently broke, and they owe the Iron Bank quite a bit of money. Cersei assured Tycho that the Lannister's always pay their debts, and we also found out towards the end of last night's episode how they planned on paying that debt.

The unsullied forces commanded by Daenerys Targaryen stormed the gates at the seat of the Lannister's power, Casterly Rock, where they were able to enter the fortress through a secret entrance that Tyrion Lannister (Peter Dinklage) had built himself. The unsullied easily took Casterly Rock, but they were in for quite the surprise, when the Iron Fleet of Euron Greyjoy (Pilou Asbaek) arrived to destroy the fleet that Theon (Alfie Allen) and Yara Greyjoy (Gemma Whelan) stole from them at the end of Season 6. The bulk of the Lannister army instead headed to Highgarden to attack their former allies, the wealthy House Tyrell, which they took easily as Jaime Lannister (Nikolaj Coster-Waldau) had a final chat with Lady Olenna Tyrell (Diana Rigg) before poisoning her. However, Olenna got in one final blow, admitting that she had poisoned Jaime's son, King Joffrey (Jack Gleeson) before she died.

RELATED: Game of Thrones Six Kingdoms Whisky Honors the Series' Epic Legacy

The trailer shows Jaime looking over part of the gold they had seized from Highgarden, and now, presumably with their debt paid in full, the Iron Bank will continue to finance the Iron Throne's battles against its many enemies, one of whom, is Daenerys Targaryen, who has now suffered two crushing defeats in a row. In the Season 7 premiere, Olenna was sent back to Highgarden to assemble her army, which, along with the army from Dorne, would be used to attack King's Landing and take the Iron Throne. The fleet never made it to Dorne, following a surprise attack from Euron Greyjoy, and the Lannister's have taken over Highgarden, meaning Dany is all out of allies, a point she brings up in the trailer during a meeting on the Dragonstone beach with her closest advisers, where she also tells them, "Enough with the clever plans." We also get brief shots of a knife being unsheathed by an unknown character, Podrick (Daniel Portman) being knocked to the ground, Theon and other Ironborn soldiers bringing a small boat ashore, Jon Snow and Daenerys heading into a cave where the dragon glass can be mined from, and shots of Littlefinger (Aidan Gillen), Sansa Stark (Sophie Turner) and Brienne of Tarth (Gwendoline Christie), but the final shot is perhaps the most intriguing of all.

In last night's episode, Daenerys suggested that she start taking matters into her own hands, hinting that she could ride upon of her dragons to destroy the fleet of Euron Greyjoy, which has been nothing but a thorn in Dany's side since this season began. All of her advisers, including Missandei (Nathalie Emmanuel), Lord Varys (Conleth Hill) and Tyrion were against it, since, while her dragons may be invulnerable to most traditional attacks, all it could take is one accurate arrow to end her quest for the Iron Throne. Since her first two plans have failed, it seems Dany could be ignoring their counsel this time around, and while we don't get a super-clear shot of Dany atop one of her dragons, it seems she is in fact riding one of these fire-breathers into battle, to even the score in this Great War. Take a look at this new trailer for next week's episode of Game of Thrones.