Just as Ash, Misty, and Tracey set foot on Mandarin Island, Pikachu and Togepi turn against them and join a group of other angry Pokémon. When the misbehaving Pokémon disappear, Officer Jenny arrives and informs them that dozens of Pokémon have been reported missing, including Meowth! Everyone fears a Psychic attack is behind this mystery. Will Jessie and James actually join forces with our heroes? Could they possibly win a battle for the first time?