Kin-dza-dza!

Two Soviet humans, Vladimir Mashkov ('Uncle Vova', Stanislav Lyubshin) and a young Georgian student, accidentally travel through space after encountering an alien teleportation device on a Moscow street. They land on the planet Pluke in the Kin-dza-dza galaxy, where they encounter a post-apocalyptic world with primitive-looking technology and telepathic inhabitants who speak very few words. The duo must navigate a complex societal hierarchy with "Chatlanians" and "Patsaks," learn to communicate in a foreign language, and find a way back to Earth before being transported back to their own time.