On a lush planet called Pandora live the Na'vi, beings who appear primitive but actually are highly evolved. Because Pandora's environment is poisonous, human/Na'vi hybrids, called Avatars, are linked to human minds, allowing for free movement on Pandora. Jake Sully (Sam Worthington), a paralyzed former Marine, becomes whole again through one such Avatar, and falls in love with a Na'vi woman (Zoe Saldana) . As his bond with her grows, he is drawn into a battle for the survival of her world.