James Cameron chats with ET’s Denny Directo at the premiere of ‘Avatar: Fire and Ash,’ in theaters on Dec. 19. The director opens up about where the films picks up after the second film’s big ending. He also gives an update on a potential 4th and 5th film and why there’s no guarantee they will happen. Plus, James gushes over co-directing Billie Eilish’s ‘Hit Me Hard and Soft’ concert film alongside the singer.