Aesop is a mysterious giant fish capable of flight, serving as the central figure driving the narrative. Having traveled the skies extensively, he has now lost the ability to fly due to shedding scales over time. These scales possess mystical properties essential for restoring flight. Aesop's condition necessitates assistance from three younger animal companions encountered early in the story: Picco, a curious hamster; Toccho, a food-loving platypus; and Fufu, an intelligent yet timid ferret. Together, they embark on a journey across diverse environments to locate and retrieve the scattered scales lost during Aesop's past aerial travels.

Discovered by the trio in a concealed lake beneath mountains after they fall into the water, this encounter sets the central plot in motion. Aesop's primary motivation is regaining the power of flight through scale recovery, establishing the core quest objective. Following this initial meeting, Aesop remains largely passive in physical actions, relying on Picco, Toccho, and Fufu to actively search for and collect the scales across various global locations. The narrative structure incorporates adaptations of traditional fables into the group's quest adventures. The quest concludes successfully with the collected scales enabling Aesop to resume flight. Aesop functions primarily as a catalyst for the adventures of the three protagonists.