New 'Avatar' Trailer Reveals More Plot, CG Effects

Preview for James Cameron's long-awaiting film leaks online.

It's one of the most anticipated films of the year, a movie that is supposed to change the way we look at movies, and the first proper James Cameron flick since he became "King of the World" with "Titanic." Now, a new trailer for [movie id="301495"]"Avatar"[/movie] has leaked online, giving us our best look yet at the mysterious, mind-boggling December 18 blockbuster.

"I'd like to talk to you about a fresh start, a new world," a character explains in the opening of the blurry-but-satisfying leaked clip, the true version of which is debuting at theaters everywhere in front of this weekend's new movies. "You'd be making a difference."

That opening transitions into footage of a ship landing on the alien planet Pandora, depositing Sam Worthington's wheelchair-bound Jake Sully into a world populated by a humanoid race known as the Na'vi. "I became a Marine for the hardship," he explains. "I told myself I could pass any test a man can pass. All I ever wanted was a single thing worth fighting for."

At this point, the trailer, accompanied by swelling music, opens up into a "Jurassic Park"-like wonderland with lush tropical forests, massive creatures and wide-eyed faces. "This is why we're here," says Selfridge, a greedy character played by Giovanni Ribisi. "Because this little gray rock sells for $20 million a kilo. Their village happens to be resting on the richest deposit, and they need to relocate. Those savages are threatening our whole operation."

"We're on the brink of war," he barks at Sigourney Weaver's scientist character, Dr. Grace Augustine. "And you're supposed to be finding a diplomatic solution."

It seems doubtful that the Na'vi will quietly step aside and let the invading Earth-dwellers mine their land for gray rocks. But with help from futuristic avatar bodies, the Marines plan on doing their fighting from a relatively safe distance.

The second half of the trailer focuses heavily on what Sully sees as his avatar snaps into action. Worthington infiltrates the Na'vi civilization disguised as one of their own. Forests are toppled, blue beings ride on the back of winged creatures, and the tension mounts. The trailer then reveals several key plot points, such as Sully beginning to empathize with the Na'vi and later getting discovered as a traitor. There's certainly a lot to process, as Cameron's impressive back-catalogue of film titles is interspersed with shots of all kinds of big, scary, eye-popping CG creatures.

"They've sent us a message, that they can take whatever they want," a Na'vi says during a stirring speech to rally the blue troops at the end of the 3:17 clip. "Well, we will send them a message. That this is our land!"

Check out everything we've got on "Avatar."

For breaking news, celebrity columns, humor and more — updated around the clock — visit