Science fiction films often explore themes of advanced technology, extraterrestrial life, and their implications for humanity. District 9 depicts aliens who have become refugees in Johannesburg, exploring themes of xenophobia and corporate exploitation. The film's protagonist Wikus undergoes a metaphorical transformation as he begins to empathize with the aliens after being infected by their technology. Major conventions of the science fiction genre seen in District 9 include an alien invasion/contact scenario, advanced alien weapons, and the portrayal of a powerful multinational corporation as an antagonist.