James Cameron’s next movie project, Last Train from Hiroshima, already sounds a lot more tantalizing than the three Avatar sequels he’s supposed to make first. Cameron is confirmed to be directing at least three more Avatar sequels, including the upcoming Avatar: Fire and Ash (and he’s teased that Avatar 5 could be followed by Avatar 6 and 7 if all goes well), but he’s already lining up his next directorial project for when he’s finally done with the Avatar saga. This will be Cameron’s first non-Avatar movie since he made Titanic in 1997, so it’s been a long time coming.

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.