"Avatar: The Way of Water" will start in German cinemas in less than two weeks. Director and Oscar winner James Cameron (68) is planning a total of four sequels to "Avatar" from 2009, which are to be released in cinemas after "Avatar 2" in 2024, 2026 and 2028.

And as "Avatar: The Way of Water" actor Sam Worthington (46) now revealed to US late-night talker Jimmy Fallon (48), "Avatar 3" planned for 2024 is already mostly in the box. "We've done about 80 to 90 percent of part three," Worthington revealed on The Tonight Show on Wednesday night.

Some scenes have already been shot for the fourth part of the planned saga, Worthington added to the astonishment of the "Tonight Show" audience. That would be due to the child actors growing up, "so we have to shoot it before they get a little bit older," says the actor.

"Avatar: The Way of Water" will be about the fact that Worthington's ex-human Jake Sully and his Na'vi partner Neytiri (Zoe Saldana, 44) started a family on the moon Pandora. This is a total of five children, including two adopted children.

Lead actor Worthington has already seen the film, which director Cameron completed just last weekend, and promises: "'Avatar: The Way of Water' surpasses the first part by far".

Legendary director James Cameron revealed in an extensive interview with "The Hollywood Reporter" that he has already drawn up plans for a potential sixth and seventh "Avatar" part. The 68-year-old filmmaker added that he "would be 89 years old" at the time of the making of 'Avatar 6 and 7'.

"Obviously I won't be able to keep making 'Avatar' films for the amount of energy it takes," Cameron said. But the cinema innovator also came up with a solution for this: "I would have to train someone to do it". A successor could therefore be apprenticed to the star director.