Entry into a Castle
The attackers break into the fortress and overpower Digald. Felme attacks Torafu's Generator, aggravating Ruuji into attacking her, but she manages to escape him. After the battle, Ruuji meets a friend of Ron's who comes from Sora City - the city in the sky where the People of the Sky live, and where Ron also comes from.
Aired 08/01/2006EP 39 - Entry into a Castle

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)