The story happens in 22nd century. Human scientists discover that there is another planet called Pandora which contains rich minerals which are quite valuable. The army takes up the mission on going to Pandora and rob the minerals. But there is a problem. There is a sect of na’vis, a humanoid race are inhabitants of Pandora. They are quite tall with blue skin, golden eyes and a supple tile. There is not enough oxygen over there and human beings can’t survive. The scientists invent a new process (kind of Matrix process) of Avatar which makes select human beings look-alike of na’vis and sends them across to Pandora to get more information so that their military attack would be immaculate. Jake (Sam Worthington) is a marine who lost his legs in a warfare. His identical twin brother was groomed to be an Avatar, but dies. The Colonel promises his legs back (an expensive operation) if he cooperates to be an Avatar. After going to Pandora as an Avatar, Jake realises that the sect of na’vis are kind-hearted people who co-exist with the nature. He falls in love with the local princess Neyitiri (Zoe Saldana). Jake has orders to follow, But, he learns that Colonel is destroying good people for the sake of minerals. He decides to save Pandora from humans. The rest of the story is all about how he achieves it!