People of the Sky - S1.E32

Ruuji's group reaches Katou City, and learns more about the People of the Sky, and their giant Zoid that supposedly carried people to the heavens. Ruuji and the others go diving and find part of this Zoid, the Gildragon, but most of it is buried under rocks. After leaving the city, they are attacked by Zairin, and even Hayate Liger is unable to defeat him. Ron unleashes his ultimate attack, destroying both Zairin's Volcano and his own Bamburian. Ron survives by riding out of the explosion on Hayate Liger's back.