Rey spent a majority of The Last Jedi on the planet Ach-To training with Luke Skywalker, and though she has no reason to come back, it looks like The Rise of Skywalker will definitely come up with one.
Check out this still of Rey from the latest Duel spot:
The rocks and grass definitely look like they're from Ach-To, plus, it looks like Kylo's new TIE that's burning on was used to be the first Jedi Temple. Check it out:
We don't know how (or why) Rey would end up on the planet again, but there is a rumor going around that a new Force power will allow Rey (and possibly Kylo) to flit around places in the galaxy; one such place is Luke Skywalker's last home. Heck, maybe Rey can even obtain Han Solo's lucky dice while she's there, seeing as Luke took it from the Falcon in the last movie.
Of course, this is just me speculating. It could be an entirely new location, but the rumors are lining up to what we've been seeing in the promos. I'm sure a lot of lore nuts will be mad about the Force granting teleportation powers all of a sudden, but if you follow Star Wars, the Force can kind of do whatever the plot needs it to—make holograms, trick the weak-minded, make things float, you name it.
Will Rey come back to Ach-To? Will she bring Kylo along this time? Catch Star Wars: The Rise of Skywalker when it hits theaters Dec. 20.
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