The 62-year-old filmmaker revealed that the storyline of his upcoming film will follow Jake Sully (Sam Worthington) and Neytiri (Zoe Saldana) and their children, who struggle with the humans, reported Variety.
"The storyline in the sequels really follows Jake (Sam Worthington) and Neytiri (Zoe Saldana) and their children. It's more of a family saga about the struggle with the humans," he said.
Cameron also assured that the film would come out in Christmas 2018.
"We haven't moved that target yet, but we will if we need to. The important thing for me is not when the first one comes out but the cadence of the release pattern.
Production on the second "Avatar" film is expected to begin in 2017, with Stephen Lang and Sigourney Weaver returning to portray their roles from the first film as Colonel Miles Quaritch and Dr Grace Augustine respectively.