One night, a man named Ocasini arrived at the Ninjutsu Academy claiming to be a Saturn’s Tourism Ambassador. When Ocasini was handing tissues to promote Saturn, he runs into Shinbei! The two hit it off right away and Rantaro, Kirimaru, and Shinbei immediately set off on a tour to Saturn. They explore the beautiful rings of Saturn, its moon Enceladus, and Titan! Shinbei asks if they can be taken to the main body of Saturn… but there, they discover the secrets that lie within Saturn?