Avatar brief plot script story spoilers:

Far into the future, Human space travelers find a planet given the name Alpha Centauri B-4. It's known as Pandora, which is bountifully blessed with weird and wonderful creatures and plants that breathe ammonia instead of oxygen. The Humans seek to take the wealth of this amazing planet for themselves. The hero of the story is an injured, former marine named Jake Sully, who unwillingly joins the native population of Pandora in a dramatic and mesmerizing battle to avoid conquest by the invading extraterrestrials from Earth.