Pokémon Ranger and the Kidnapped Riolu! Part 1

On the way to the next town, Ash and friends encounter a Pokmon Ranger named Kellyn who is working undercover to protect a Riolu that can use Aura before it evolves from Pokmon Hunter J. Soon J returns, and she is not happy about seeing Ash again. Ash and friends agree to help the Ranger protect Riolu, but J is more persistent then ever.