Kiyo is a junior high student who's a genius, yet repeatedly cuts his classes because he is literally smarter than most teachers in the school. Meanwhile, in a forest in England, Kiyo's father who is an archaeologist discovers a mamodo child named Zatch, who has no memory of who he is or of his past. Kiyo's father sends Zatch to Kiyo as a sort of mentor. However, Kiyo doesn't take kindly to Zatch's efforts. The 14-year-old pulls a prank on the boy by saying he'll rescue Zatch from the schoolyard bully. Even as Zatch is pummeled by the bully, Zatch continues to stick up for Kiyo. Kiyo finally steps out from behind a door to aid Zatch, and basically gets his butt kicked. Then out of the blue, a skateboarder rides onto the roof with another kid like Zatch on his shoulder and, somehow, blows away the bully. Literally. The skateboarder, Eido, attempts to claim Suzy, Zatch's newly-found friend and Kiyo's childhood friend, as his prize. Zatch and Kiyo are both overwhelmed by anger, and with the help of a magic book and forces that they can't explain, get rid of the strange teenager and the smaller boy with a viscous lightning bolt. As Kiyo wonders about Zatch's true power, two others watch from afar. Others that know things far too terrible for anyone to know.