Legend
Ruuji's group splits up and goes to find more rebels to help battle Digald. Ruuji, Mii, and Ron reach their first destination, and there they learn about the event called "God's Fury", which destroyed the previously advanced civilization of Planet Zi. Hearing an explosion outside the city, Ruuji goes to investigate, and is attacked by Zairin with his new Zoid, Volcano. Leeo weapons are unable to damage Volcano and Ruuji is forced to retreat.
Aired 16/10/2005EP 28 - Legend

Zoids Genesis
Natural disasters have devastated planet Zi, killing off almost all life. A thousand years later humans have gradually re-established civilization, salvaging ancient Zoids through diving and mining efforts. In a village whose most previous item is a giant sword which they worship as a holy symbol. A teenage boy discovers an ancient Liger-type Zoid while on a deep water salvage operation. Suddenly the village is attacked by skeletal Bio-Zoids intent on stealing a powerful generator located in the village. Our teenage hero awakens the Liger and discovers that the towns sacred sword is the Ligers weapon, together they fight off the mysterious Bio-Zoids. At least for now...
(Source: AniDB)