A hero to master the greatest power the world has ever known: Xyber 9!Jack, a precocious, blonde fifteen-year-old who is an orphan, is given the title of the Chosen One.

With Xyber 9's power, Jack journeys through Machestro's underworld and to other futuristic lands, fighting intergalactic evil with an ever-increasing band of allies.

At the end of the original run, Jack finds the protected valley, a location left by Terrana's advanced ancestors and a protected valley with genetically-altered crops that could grow in two days time, and need very little water and nutrients, which Jack shows to the people to help return Terrana back into its previous state.

Part 1 (New Acquaintances): A 15 year old young man named Jack is caught up between the fight between two kingdoms while trying to make his way around the world in hopes of finding a Weapons Master to teach him.

Part 2 (Enter Ikira): Jack continues his search for a Weapons Master to learn from and comes to a town plagued with a monster that has caused its river to run dry.

He then meets an old man, Ikira, who he finds out to be one of the best swordsmen around before he fell to ruin to be a mere beggar, losing his swords and uniform.

Part 1: With King Renard's rail cannon completed, he uses various places as target practice but finds out he has run out of Strontite explosive for the missiles.

Once there they meet a boy named Christopher whose grandfather, Albion, is the King of Eldera but find out the kingdom has fallen to very simple means, unable to put up much of a fight against Renard's forces.