Chapter 13 of “The Mandalorian,” titled “The Jedi,” hints that “Ahsoka” will be about her search for Grand Admiral Thrawn — the ruthless Imperial officer who was the main antagonist in “Star Wars Rebels.” The last time fans saw him was in the series finale, in which he faces off with Jedi Padawan Ezra Bridger. The two are aboard Thrawn’s command ship when Ezra uses the Force to call a group of whale-like creatures called purrgil to attack Thrawn’s fleet. The purrgil eventually jump into hyperspace, disappearing with Ezra and Thrawn, their whereabouts a mystery.
The last few seconds of “Star Wars Rebels” show Ahsoka and the Mandalorian warrior Sabine Wren joining forces to look for Ezra in space, and it looks like that scene takes place after Chapter 13 of “The Mandalorian.” Since we know Sabine is in the series, it looks like their search for Thrawn will be a big part of the show.
Since Christensen is also set to return in “Ahsoka” as Anakin Skywalker/Darth Vader, the show could also explore Ahsoka’s relationship with her former master, which soured when he went over to the dark side of the Force.