20th Century has unveiled the official trailer for the sci-fi sequel Avatar: Fire and Ash [AVAT3] directed by James Cameron [JCAME]. Marine turned Na’vi leader Jake Sully and Neytiri lead their family across Pandora away from the RDA. Sam Worthington, Zoe Saldana, Sigourney Weaver and Stephen Lang return from the previous films while Oona Chaplin joins the cast as the leader of the Ash clan that lives near volcanoes. Avatar: Fire and Ash arrives in theaters on December 19th.