Episode 637 – Pokémon Ranger: Heatran Rescue!

Episode Summary
Continuing on toward Lake Valor and the Grand Festival, 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.