The plot of James Cameron's Avatar follows a wheelchair-bound ex-Marine named Jake Sully (Worthington) as he makes his way to the planet Pandora, which is inhabited by the humanoid alien race of Na'vi and is filled to the brim with precious minerals. He is sent there to control an avatar--a genetically crafted Na'vi body--through a scientific program run by Dr. Grace Augustine (Weaver) whose mission is to understand the aliens' world and culture. However, they aren't the only humans on Pandora. A mining expedition is attempting to extract as much of the precious minerals as they can from Pandora and have recruited military personnel to protect them from the "hostile" Na'vi.The world is filled with small differences that appear to be minor details but manage to significantly differentiate it from Earth. For example, on the tips of the lengthy Na'vi hair are tentacles that allow them to connect to other animals (and in fact to the planet itself). No, it's not "realistic," but it is believable. There exist no inconsistencies that take you out of the experience and remind you that this is just a movie. While the dialogue isn't particularly impressive, the writing paints the planet in such a way as to make it true to itself and completely immersive. However, Avatar is by no means perfect. The story is extremely conventional--think of it as a sci-fi version of the anti-imperialist Pocahontas story--and therefore quite predictable. Still, there are a few unexpected surprises to the plot and the action is absolutely spectacular. It progresses at a flawless pace and is breathtaking and exciting.
Avatar is a compelling argument for the 3D action film. I was never a huge believer in 3D, since it seemed gimmicky and could easily give you a headache (especially in a film that lasts 2 hours and 45 minutes, as this one does), but Avatar was made to be seen in 3D. And it shows. Every single shot of every single action scene--of which there are many--is enhanced by the depth of the environment and the movement across the planes of action. I heard that James Cameron invented a large part of the 3D technology that's been used in other movies as he was developing this film; I believe it. Simply put, Cameron knows what he's doing with 3D. If you were interested in seeing a 3D movie, this is the one to watch. Just make sure you see it in IMAX 3D, because I only saw it in regular 3D and now I have to see it again. I just have to.
IMDb link: http://www.imdb.com/title/tt0499549/