The Fleeing Tower of Sunyshore!
Ash is finally going to battle Volkner, the Gym Leader of Sunyshore City so he can get his eighth badge and qualify for the Sinnoh League. However, a mysterious power outage occurs, canceling the battle. Everyone heads to Sunyshore Tower, the source of the city's power, but it has disappeared! Now they must somehow trace it and bring it back.
Aired 04/03/2010EP 166 - The Fleeing Tower of Sunyshore!
2006
Pokémon the Series: Diamond and Pearl
After defeating Brandon and declining the offer to be a Frontier Brain, Ash sets off to travel through the far away land of Sinnoh. Once he gets there, he meets up with Hikari, a local trainer from the region, and they decide to travel together.