District 9 is a South African science fiction film directed by Neill Blomkamp. The film is set in an alternate version of Johannesburg, where extraterrestrial refugees are forced to live in a segregated slum called District 9. The story follows a government agent who becomes infected with an alien substance and must go on the run, teaming up with the aliens he once oppressed. District 9 is a thrilling and socially relevant film that explores themes of xenophobia and discrimination.