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.
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.
With the water supply restored to the town, Jack and his companions, Ikira, Mick, Willy and the mysterious person from the wilderness receive their reward: a deed to the right of ownership of the valley above the dam.
While aboard Queen Tatania's battle ship, HMS Independence, to fight King Renard's forces, Jack faces some skepticism from crew members that he is on their side.
Using the cover of a battle between Tatania and Renard's forces, Jack and his band enter an old railway system in hopes of discovering answers for the vault by relying on data from the Independence.
The search for information on how to open the vault leads Jack, Ana, Ikira and Xyber 9 deep into King Renard's domain.
Jack and his allies investigate something that King Renard has been working on that Princess Roselyn noticed.
While looking for a code key in a fortress belonging to King Renard's fortress Jack, Mick and Willy find an old plane wreck where Mick discovers a treasure map to the golden idol of Tereus.
Jack recovers an artifact known as the Seed of Light however the team starts to fall apart as everyone begins to fight due to not having one common goal.
During a mission into the Machina tunnels to obtain a key that will allow Jack and his band access to any of the tunnels without alerting the enemy, Jack opens a door that expose some Machina tunnel rats to the sunlight, causing them extreme pain.
Queen Tatania's forces are caught in a pincer attack due to a false message Jack intercepted.
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.
Trapped on the bottom of the sea with the Astral Hand, Jack with Xyber 9, Ana and Ikira try to reach the surface while else where Mick and Willy do their best to defend Eldera.
The Hunters have been unleashed! But Machestro and Renard aren't the only ones with new toys; Jack and his friends finally opened the vault at the New Valley, too.
Anakonda starts acting strangely during a raid on one of Renard's convoys; it seems there's trouble in her homeland and even at this distance she can sense it.
While hunting for a magnetic disruptor in the ruins of an Ancient city, the gang finds something else entirely, something surprising.
While on the run from Renard, Jack and company discover an old fortress belonging to the legendary King Dragar.
Renard attacks the New Valley again, and this time he's brought along something special, a new Machina fighter plane with enough power to face off against Jack's Spider Fighter.
With Renard destroying Tatania's kingdom city by city, a raid on the Rail Cannon is in order.
After being constantly outmaneuvered by Jack and company, Renard finally discovers he has a spy.
Xyber 9's fallen into enemy hands, but he's not exactly being cooperative.
Renard is gone, and now there's one final battle to be won before the world knows peace.