Pokémon S09E13 - Queen of the Serpentine!

Ash finally arrives at the location of the Battle Pike, ready to battle. Team Rocket tricks him into coming into their own fake Battle Pike where they capture Pikachu. With the help of the real Frontier Brain—Pike Queen Lucy—they save Pikachu. Ash challenges Lucy to a battle, and even though it is her day off, she accepts as she has a crush on Brock. As the two begin their battle, Ash realizes Lucy is no pushover. Can Ash win? And who will Brock cheer for?