Last Train from Hiroshima, James Cameron’s upcoming film, already sounds far more intriguing than the three Avatar sequels he plans to produce first. Although Cameron has hinted that Avatar 5 might be followed by Avatar 6 and 7 if all goes according to plan, he is already planning his next directing project for when he is finally finished with the Avatar saga. Cameron is confirmed to be directing at least three more Avatar sequels, including the upcoming Avatar: Fire and Ash. It has been a long time coming, as this will be Cameron’s first non-Avatar film since he created Titanic in 1997.

Most of Cameron’s movies have been high-concept, action-packed sci-fi epics like Aliens, The Terminator, and the Avatar films, but his first post-Avatar movie will be more like Titanic: a historical drama based on a real-life tragedy. Cameron’s next movie, Last Train from Hiroshima, will dramatize the U.S. government’s atomic bombings of Japan in World War II. Cameron said that it’s a subject he’s wanted to make a movie about for years, and that he’s been “wrestling with how to do it.” This new project already sounds more exciting than the litany of upcoming Avatar sequels.