On their way to Veilstone, Ash & Co. decide to stop off at some hot springs near where one of Dawn's friends lives. However, when they get there, they discover that the Hot Springs have recently gone dry. Ash & Co. decide to look for the reason why this has happened...

On their way to Veilstone, Pachirisu gets stuck in a Hippowdon. While trying to get it out, Ash & Co. discover that not one, but two Team Rocket groups are trying to capture the Hippowdon and the Hippopotas. With the help of his old Hippopotas friend, Ash must stop them. Will Team Rocket be stopped and will Pachirisu be rescued?