A Forbidden Piece of History! A Theory Concerning a Kingdom Shaka discusses his theory with Sanji's group regarding an ancient kingdom connected to the Void Century. He believes this kingdom was eradicated by the World Government to erase its history. Shaka links this theory to the Ohara Incident, where scholars sought to uncover this history. During his visit to Ohara, Shaka found discarded books that were saved by the scholars during the island's destruction. Meanwhile, Luffy and Chopper investigate an ancient robot and encounter the real Dr. Vegapunk.