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.
So the flood found the treasure...
Gracias al alud, encontramos los tesoros.
Gracias a la corriente, 
encontramos los tesoros.
Então a enchente revelou o tesouro.