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Thirty years ago, aliens arrive on Earth -- not to conquer or give aid, but -- to find refuge from their dying planet. Separated from humans in a South African area called District 9, the aliens are managed by Multi-National United, which is unconcerned with the aliens' welfare but will do anything to master their advanced technology. When a company field agent (Sharlto Copley) contracts a mysterious virus that begins to alter his DNA, there is only one place he can hide: District 9. Wikipedia