Ep 37. A Mudkip Mission!

In the Pokemon season 6 episode 37 titled "A Mudkip Mission!," Ash and his friends arrive in a new town where they discover a group of Mudkips in distress. The Mudkips, along with their trainer, have been trapped in a cave by a group of hostile ground-type Pokemon known as the Whiscash. Ash and his friends offer to help the Mudkips while their trainer tends to his injured arm. The group sets out to rescue the Mudkips and defeat the Whiscash.

Along the way, they encounter an experienced trainer named Katrina who offers to join them on their mission. Katrina's expertise proves invaluable as they navigate the treacherous cave system and battle the Whiscash. As they progress, they discover that the Whiscash have been causing earthquakes in the area, and Ash and his friends realize that they must stop them before they do any more damage.

With Katrina's guidance, Ash and his friends devise a plan to lure the Whiscash out of the cave and into a nearby river. They succeed in luring the Whiscash out, but they soon realize that they are not powerful enough to defeat them. However, with the Mudkips' help, they are able to defeat the Whiscash and save the day.

In the end, the Mudkips are grateful for Ash and his friends' help and the group bids farewell to Katrina as they continue on their journey. This episode is a heartwarming and exciting adventure that showcases the importance of teamwork and perseverance in the face of adversity.