..a man tries to make his way as a miner by combining with an alien during an interplanetary war in which aliens can manifest themselves by possessing human bodies -- avatars.
When Avatar was titled "Project 880", a casting call was put out in June 2006 with a plot description provided, saying, "In the future, Jake, a paraplegic war veteran is brought to another planet, Pandora, which is inhabited by the Na'vi, a humanoid race with their own language and culture. Those from Earth find themselves at odds with each other and the local culture."
In December 2006, Cameron described Avatar as "a futuristic tale set on a planet 200 years hence... an old-fashioned jungle adventure with an environmental conscience... [that] aspires to a mythic level of storytelling." The January 2007 press release described the film: "Avatar is also an emotional journey of redemption and revolution. It is the story of a wounded ex-marine, thrust unwillingly into an effort to settle and exploit an exotic planet rich in bio-diversity, who eventually crosses over to lead the indigenous race in a battle for survival."