Mana visits Sakaiminato, where her aunt and uncle live. She was looking forward to the festival, but loses her enthusiasm after finding out that it might not be held this year. In order to cheer Mana up, Uncle Shōji decides to go fishing so he can feed her the most fresh and liveliest fish he can catch. However, he doesn't return. Mana and the town's fishermen set out by boat to find the missing men, to soon be attacked by Funa-Yūrei. These Funa-Yūrei were recognized to be the missing fisherman, including Uncle Shōji. Mana is the only one to survive the attack and washes up on shore. Kitarō arrives and heads to sea by boat to investigate. There, he encounters the Funa-Yūrei and the yōkai Umizatō that was supposed to have been sealed away!