District 9 is set in an alternate 2010, where an alien spacecraft has been stranded on Earth for decades, hovering above Johannesburg, South Africa. The aliens, derogatorily referred to as "Prawns," are initially welcomed but eventually ghettoized in a government-constructed refugee camp called District 9. The film follows Wikus van der Merwe, a bureaucrat tasked with relocating the aliens to a new camp, who unexpectedly becomes one of them after exposure to an alien liquid.

The good news is that you do not need to risk jail or malware to watch this film. There are legal avenues, though the availability of a specific Tamil dubbed track varies.