列車は「銀河鉄道(ぎんがてつどう)」で、親友の名前は「カムパネルラ」

On the night of the Star Festival (Centaurus Festival), Giovanni lay alone on the cold grass on top of a hill, staring up at the starry sky. Suddenly, a mysterious, loud voice echoed: 'Galaxy Station...' and he found himself boarded on a 'Galactic Railroad carriage' that appeared within the dazzling light of the Milky Way. In the seat next to him, his sole dearest friend Campanella, who had never bullied him, was sitting, wearing a wet coat.