Flint Sparks the Fire!
Ash and friends have finally arrived in Sunyshore City, where Ash will challenge the Gym Leader and try to win his eighth badge. However, something is wrong with Volkner, the Gym Leader, and he does not seem interested in battling at all. However, his friend, Flint of the Sinnoh Elite Four has an idea to rekindle his spirit.
Aired 25/02/2010EP 165 - Flint Sparks the Fire!

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.