. >> reporter: zo saldana, sam worthington, steven lang, sigourney weaver among the returning cast.ture rendering their physicalities and facial expressiveness, even eye movements on screen. >> people think we've voiced an animated film. >> i hadn't imagined that every single movement of our faces would really be picked up, and not just used, but treasured. >> reporter: once again, kate winslet is in a film by james cameron. 25 years after his "titanic" became the top-grossing movie ever and transformed winslet into a star. >> i feel like i'm living proof in the belief that jim has instilled in me. >> reporter: from his lifelong love and exploration of the sea, to his interfamily dynamics, so much of "the way of water" is drawn from cameron's life. >> as a father of five kids, i've seen how you have to, with love, create boundaries. but not be overtly disciplinarian. >> he said they had taught him how to direct because he had to deal with so many situations. he brought all that love and complexity to us. >> reporter: weaver shoulders that complexity, after playing grace augustine in