This is the country called Aesop World. Pikko, Toccho and Fuufuu are very good friends and live in the Water Wheel Village. One day the three of them play in the mountains and fall by accident down into a secret lake. What they find there is the giant fish Aesop. Long ago he could fly freely through the vast sky, but during all the years he lost his "scales" and is now no longer able to. The three kids want to help Aesop and go on a great adventure to find the mysterious scales that scattered all around the world. Source: Translated from http://www.amuse-s-e.co.jp/kids/isop/story.html.