"We're going to have to smuggle ourselves off Lothal for a change."
Ezra meets Vader...
It doesn't go well.
It doesn't go well for anyone.
Vader takes on a whole rebel fleet in his special TIE fighter, and we see why he's so feared as a pilot. Seriously, the stuff he does with his TIE is so far beyond anything we've seen from him, and we saw Anakin do a lot of impressive flying during Clone Wars.
The take away, though, and this is spoilery, is that Vader discovers his old apprentice is still alive.
Really, that's all I'm going to say about all of this (almost). It was a great start to season two and bringing Vader and Ahsoka together has me fully invested in where this is going to go.
All that and Lando makes an appearance.
And the Emperor.