Continuing the journey to Veilstone City, Ash is busy training Turtwig so it can perfect Energy Ball. Realizing that it is getting late, Brock insists that they get to the next town before it gets dark. Dawn says that instead they should go to a nearby hot springs hotel owned by her friend's family. They arrive there and Dawn introduces them to her childhood friend Leona. While they immediately jump into the hot springs, they find out that the water level is low and they are cold. Leona reveals that it happened just recently, and her parents went off to find out the reason. Ash, Dawn, and Brock agree to help her find the reason and head up into the mountains with her. They soon discover a fresh hot spring in the mountains. The hot spring was made by a disguised Team Rocket, who is tapping into Leona's pipeline, and now they must find a way to get the water back.
A young boy named Ash Ketchum embarks on a journey to become a "Pokemon Master" with his first Pokemon, Pikachu. Joining him on his travels are Brock, a girl-obsessed Rock Pokemon Trainer, and Misty, a tomboyish Water Pokemon Trainer who may have a crush on him. Ash and Co. end up traveling through various regions, including Kanto, the Orange Islands, and Johto, and then enter the Pokemon League competitions there.
Along the way, they run into many confrontations with Jessie, James, and Meowth, a trio of Pokemon thieves who are apart of an evil organization called "Team Rocket". But every time Team Rocket try to do their evil deeds, they fail thanks to Ash and his Pokemon.