"Game of Thrones" Season 7, Episode 1 is titled "Dragonstone." The episode begins with a cold open showing Arya Stark traveling through the Riverlands. She comes across two Lannister soldiers and takes their faces as part of her quest for revenge.
In King's Landing, Cersei Lannister is consolidating her power after becoming the Queen of the Seven Kingdoms. She meets with the Iron Bank and convinces them to support her claim to the throne. Meanwhile, Jaime Lannister is planning a siege of Highgarden to gain control of the Tyrell's wealth and power.
In Winterfell, Sansa Stark and Jon Snow are trying to unite the North in preparation for the coming war against the White Walkers. Littlefinger is still trying to manipulate Sansa, but Jon remains skeptical of his motives.
At Dragonstone, Daenerys Targaryen arrives at her ancestral home and begins preparing for her invasion of Westeros. She meets with her advisors, including Tyrion Lannister, and decides to begin her campaign by taking Casterly Rock, the Lannister stronghold.
On the Iron Islands, Euron Greyjoy returns and claims the Salt Throne, becoming the new King of the Iron Islands. He then sets sail to propose an alliance with Cersei Lannister.
In Oldtown, Samwell Tarly is researching the White Walkers and comes across a crucial piece of information that could help defeat them.
The episode ends with Daenerys Targaryen and her army sailing toward Westeros, ready to reclaim her throne.
In summary, "Dragonstone" is the first episode of "Game of Thrones" Season 7. The episode features multiple plotlines coming together as various characters prepare for the coming war. Cersei Lannister is consolidating her power in King's Landing, Sansa Stark and Jon Snow are uniting the North, Daenerys Targaryen is preparing to invade Westeros, Euron Greyjoy becomes the King of the Iron Islands, and Samwell Tarly is researching the White Walkers. The episode ends with Daenerys sailing toward Westeros, ready to reclaim her throne.
