Long ago, all humans lived beneath the sea. However, some people preferred the surface and abandoned living underwater permanently. As a consequence, they were stripped of their god-given protection called "Ena" which allowed them to breathe underwater. Over time, the rift between the denizens of the sea and of the surface widened, although contact between the two peoples still existed. This show follows the story of Hikari Sakishima and Manaka Mukaido, along with their childhood friends Chisaki Hiradaira and Kaname Isaki, who are forced to leave the sea and attend a school on the surface. There, the group also meets Tsumugu Kihara, a fellow student and fisherman who loves the sea. Hikari and his friends' lives are bound to change as they have to deal with the deep-seated hatred and discrimination between the people of sea and of the surface, the storms in their personal lives, as well as an impending tempest which may spell doom for all who dwell on the surface.

Follow the adventures of three ordinary girls as they make life’s awkward moments a thousand times worse. Along with a colorful bunch of classmates, they learn their most important lessons the hard way. Meanwhile down the street, a pocket-sized professor makes life difficult for a robot who just wants to be normal. But normal is the last thing you can expect in a town where salmon falls from the sky. In fact, the only thing you can count on is your friends, but even they are totally weird.

Wakana Sakai was involved in music, but gave it up one day. Konatsu Miyamoto loves singing and can't be torn from it. Sawa Okita would do anything for her closest friends. They laugh, they fight, they worry, they love... Through their very ordinary lives, little by little the girls learn to move forward. Sometimes they feel as if they can't go on alone, but as long as they have their friends, they believe they'll make it someday. Wakana, Konatsu, Sawa, and the music they make in their ensemble weave a tiny but dazzling story of the power of music.

In a world consisting of numerous isles, a young hero from the Astora Isle encounters the adventurer Kyle and follows him on an expedition on the isle. They meet a mysterious girl named Iris and a talking white cat, and together they make their way to the isle's ruins, where they find a flying island. Kyle becomes consumed by darkness there, and the party resolves to travel to the ends of the world on the flying island in order to find the seven "Great Runes", following Kyle's words before he disappeared.