Keita visits his grandfather's house during the summer vacation. Upon arrival he hears a rumour that the nearby swamp is cursed, causing the people of the town to turn into fish. It is said that only a legendary fisherman can break the curse and save the people. And so Keita begins fishing...

Keita visits his grandfather's house during the summer vacation. Upon arrival he hears a rumour that the nearby swamp is cursed, causing the people of the town to turn into fish. It is said that only a legendary fisherman can break the curse and save the people. And so Keita begins fishing...