A rich man learns of a treasure in a swamp and forces his servants to drain it. Tatsuko goes to a shrine in the mountain every night seeking eternal beauty. The black dragon, who is the master of a huge swamp, wants to marry the beautiful Kurohime.
Once upon a time in a castle,
Había una vez, hace mucho tiempo 
en un castillo,
Hace mucho, mucho tiempo, en un castillo,
Era uma vez, em um castelo,