Having met with Professor Juniper and Bianca in Chargstone Cave, Bianca takes up on an offer to trade her Shelmet for a Karrablast in order to evolve them. However, the Karrablast she receives ends up having a personality change upon evolution and quickly attacks Ash & Co. Bianca doesn't know what to do so Professor Juniper suggests a battle to prove her worth as a trainer. The battle is Ash & Cilan VS Juniper and Bianca. Who shall win and will Escavalier learn to obey its new trainer?

On their way to Mistralton City, Ash & Co. get ambushed by the Sunglasses Krokorok, Pikachu's rival. Shortly after this, Ash & co. meet up with a trainer in town who wishes to borrow Pikachu so he can battle and defeat his friend as he doesn't have any Pokémon and he has been challenged by a friend. A problem soon arises however when Ash & Co. learn that the battle is a Double Battle and so the trainer needs a second Pokémon. Krokorok decides to join in with the battle. Who will win?