Doraemon: Nobita in the Robot Kingdom (2002) is the 23rd film in the franchise and the last to utilize traditional cel animation. The narrative follows Nobita and friends saving a robot kingdom from a tyrannical regime aiming to strip robots of emotion, highlighting themes of friendship and the ethics of technology. For a detailed overview, visit Doraemon Wiki . Doraemon: Nobita and the Robot Kingdom (Anime) - TV Tropes