Kanan, Ezra, and Chopper infiltrate the Empire to disguise as workers, but a tragic death of someone close to Ezra has changed things at the hands of Grand Admiral Thrawn. I suspect he recognizes both Ezra and Kanan and went after someone close to Ezra on purpose to send a message. Thrawn has become a great threat to the Rebels. As Kanan and Ezra have trouble with their mission, they got an inside man and it’s none other than Agent Kallus himself as he is revealed to be Fulcrum. Kallus’ actions are the result of his encounter with Zeb from last season. Most of the Rebels, except for Chopper, don’t seem to trust Kallus and it’s understandable. A great episode overall.