Far beyond the Milky Way galaxy, the planet Zi, which is 60,000 light years from Earth, is a war-orn world. People who lived on this planet converted huge mechanical life-forms called "Zoids" into mechanical fighting beasts, and an endless battle unfolded.



ZAC year 2051

Planet Zi; the battle of hegemony over the central continent of Delpoi between the Zenebas Empire and the Helic Republic spanned for 70 years, and came to an end at the collapse of the Zenebas Empire.
However, the Dark Continent that was supporting the Zenebas Empire from teh shadows, the Guylos Empire, absorbed the survivingg units of Zenebas and declared war on the Helic Republic.

The exhausted Republic continued to battle even more across the 2 major continents, but it didn't last for long ...




ZAC year 2056

A huge comet hurled from space and collided with one of planet Zi's 3 moons. It caused the unusual "phenomenon," that even tore up the two large continents.

While they didn't reach a mutual conclusion, it became impossible for the Empire and the Republic to battle, and the war ended. Though uncertain, a momentary peace visited the ruined planet Zi.




ZAC year 2099

And then ZAC year 2099 --
The fearful ambitions of the regent Prozen, who snatched the real power of the Empire, was steadily progressing.

The Guylos Empire's army started to attack Europa, and the Western Continent caught between the two.
The goal, to get a foothold on the central continent.
And then, because it was dotted with countless historic ruins, for the sake of getting the lost of an ancient civilzation.

The Republican Army, which sensed this, also began landing on the Western Continent.

With the Western Continent as the stage, another age of war was trying to begin ...