In the previous episode of "Star Wars Rebels," Ezra and Kanan were sent to Lothal to search for a secret Imperial weapon. The episode also revealed more about Grand Admiral Thrawn's plans and who Fulcrum really is.

The episode begins in Lothal, which is already being taken over by the Empire. Ryder tells Ezra and Kanan that the Lothal rebels have men inside the Imperial factory who sabotage speeder bikes and walkers. Ezra then reveals the master plan: He and Kanan were sent there to get intelligence on a new weapon being built by the Empire. Since Sumar is already working inside the factory, he agrees to help them get inside.

Inside the factory, Kallus and Pryce inform the workers that they have a special visitor from the Imperial High Command: Admiral Thrawn. Noticing the high malfunction rate of Lothal-made vehicles, Thrawn forces Sumar to test a speeder bike in front of them. When Thrawn pushes the bike to top speed, the bike explodes and kills Sumar. He puts the entire factory on lockdown.

Ezra and Kanan have Chopper distract the officer. Together, they knock out a Scout Trooper and Stormtrooper to steal their armor as they try to find s Section A-2.

In another hanger, Thrawn orders troopers to shoot anyone who goes into A-2.

Meanwhile, Pryce tells Hera that he cannot communicate with Kanan and Ezra. He reveals that Thrawn is the new person in command and he plans to attack the Imperial compound to prevent Ezra and Kanan from escaping.

Inside the factory, Ezra, Kanan and Chopper continue to snoop around. After a while, Ezra and Kanan let Chopper get inside the A-2 computer room to get the data they need. However, the troopers start questioning the heroes and decide to follow them. Finding a lift, the two try to jump in but Kallus is unfortunately there. "Don't move, Rebels," he says.

After their fistfight, Kallus reveals to Ezra and Kanan that he is Fulcrum. He begs them to trust him, but only Chopper is ready to trust him. Meanwhile, Ezra and Kanan don't have a choice so they ask Kallus to help them send signal to their friends. Kallus then leads them to a communication room.

Thrawn figures out that a droid has already accessed the computer, and that the Rebels have an ally inside the Empire. Kanan and Ezra jump into an AT-DP as Ryder and his Rebels begin attacking.

Just as Thrawn begins his attack, the heroes decide to use their lightsabers to escape and jump into the body of the AT-AT. Ryder watches as the two bring down the AT-AT. Ezra and Kanan then tell Ryder about the death of Sumar, then speeds away before the troopers get to them.

At the Chopper base, they discover that the data of Thrawn's new weapon have been decrypted. While Kanan and Ezra explain to Hera how they get their hands on the intel, Kanan reveals to her that Kallus is actually Fulcrum.

Back in Lothal, Thrawn tells Pryce and Kallus about his suspected mole inside the Empire. Pryce tells Thrawn they must find who the mole is, but Thrawn asks her to be patient and says that as soon as they find out who he is, they shall turn him into an asset.

The next episode of "Star Wars Rebels," titled "Holocrons of Fate," will air on December 10. The episode will also follow Ezra as he journeys across the galaxy to sever his connection with Maul.