Just before dawn, Boro the Caterpillar hatched from an egg among patches of scrub grass. Looking around for the first time, he noticed the brilliance of the morning sun and a deliciousness in the air. Boro lowered himself down to the ground from the groundsel, and stepped out into the world of caterpillars and caterpillars' enemies.

Five young superhero ninja employed by the International Science Organization oppose an international terrorist organization of technologically advanced villains who are trying to control Earth's natural resources.

The story follows Arion, a young man kidnapped by Hades as a child and raised to believe that his mother was blinded by Zeus and that killing the ruler of Mount Olympus will cure her.