Pokemon Ranger: Heatran Rescue!
Ash and friends encounter a Pokémon Ranger named Ben. They find out that the legendary Heatran has been disturbed and is now going on a rampage, and Ben is on a mission to calm it down. Meanwhile, Team Rocket decide to catch Heatran, eager for the legendary Pokémon's power.
Aired 18/03/2010EP 169 - Pokemon Ranger: Heatran Rescue!

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.