Flight of the Falcon (S01E04)

C-3PO sets off to locate R2-D2, teaming up with Chewbacca aboard the Millennium Falcon. As they journey, C-3PO reminisces about events from The Empire Strikes Back, sharing stories with Chewbacca and their new companion, Nien Nunb. They eventually track down R2-D2 at an abandoned Battle Droid Factory, only to discover that Lando Calrissian is holding him captive. Lando had hoped to integrate R2-D2 with the Droids to revive his mining operations on Cloud City after responding to a mysterious ad. However, it turns out the ad was placed by remnants of the Galactic Empire, aiming to reactivate the factory and produce Battle Droids once more.