天の川の終点(しゅうてん)である天上の世界へ向かう「死者たちの魂(たましい)」

The two exchanged joyful dialogues inside the train running through the beautifully shining galaxy, encountering various mysterious passengers. A scholar excavating fossils, a bird-catcher who caught birds to sell as sweets, and a beautiful sister and brother who were passengers of the Titanic which struck an iceberg and sank. They were all the souls of the deceased heading toward the heavenly world at the terminal of the Milky Way.