The narrator recaps the time when Ash and co. where on the blimp duing the last episode. Ash and co. are walking down the road. Ash complains about the heat. Misty thinks that the weather is perfect. Ash suggests that they swim, but Brock tells him that they have to get the Pokéball first. The group isn't sure where Professor Ivy's laboratory is at. Pikachu points to what looks like a Pokémon Center. Nurse Joy welcomes them inside. Brock goes in one of his moods again. He takes Nurse Joy's hand, and starts talking to her. Misty takes Brock's ear and pulls him away. Nurse Joy tells them how to get to Professor Ivy's lab.

Ash and co. enters the lab. They notice that the place is empty. Suddenly, a trapdoor opens and three people come out. Ash tells them that they are looking for Professor Ivy. The triplets offer to take the group to the Professor. Walking aside on the beach, Ash and co. sees a Gyarados in the water. Professor Ivy is in the water tending Gyarados and the other water Pokémon. The triplets calls out for the Professor. They tell her that Ash and co. arrived. Professor Ivy swims back on her Gyarados. One of the assistants throws her a lab coat.

Professor Ivy shows them the golden Pokéball. On the Pokéball is the letters 'GS' which is now known the GS Ball. Brock understands that the GS Ball can't be transported. Professor Ivy's assistants demonstrates this. Afterwards, Professor Ivy adds on that the GS Ball can't be opened. Drills, hammers, saws, and other equipment don't work. Professor Ivy hands the GS Ball to Ash, telling him to give it to Professor Oak.

Meanwhile, Professor Oak is working with his experiments. The phone rings, and Ash happens to be on the other line. He shows Professor Oak the GS Ball. Professor Ivy then begins to talk to Professor Oak about the GS Ball. Then they hang up. Professor Oak seems excited about this discovery.

Team Rocket stares at their destroyed blimp. James and Meowth are scared and worried that the boss will hate them again. Jessie slaps them, and says that they have to fix the blimp. Jessie tells them that Ash and co. will have to come back soon. James and Meowth are happy by this, and all three of them start to fix the blimp.

Professor Ivy gives Ash and co. a tour of the outside of her laboratory. She tells Brock that they do a lot of breeding with Pokémon. Misty spots a flower and sniffs it. The flower happens to be a Vileplume. Ash takes out his Pokédex and scans the Vileplume. The Vileplume looks different in colors. The assistants comes in hauling a cart filled with Pokémon food. The food is made for many types of Pokémon. Ash notices that the Pokémon look a little different than the normal ones. Professor Ivy explains to the group that the differences in the island changes the Pokémon slightly. Brock asks if she has raised all of the Pokémon on the island. Surprisingly, Professor Ivy says that she has raised them all. Misty wants to see some of the water Pokémon. Ash and Misty notice that Pikachu and Togepi are eating the Pokémon food. The trainers scold Pikachu and Togepi saying that the food isn't for them. Professor Ivy doesn't seem to mind.

Stuck in a tree is a Butterfree. Professor Ivy explains that the Butterfree hasn't eaten anything in days. They tried different food combinations, but none seem to work. Brock stares at the food, and takes a sample. He swallows the food, and gets an idea. Brock starts to stir up some food. He tells everyone that nutrition isn't what Pokémon likes. Pokémon like the taste of the food. Brock sprinkles some of his ingredients into the food. Immediately, Butterfree flies down and gobbles the food up. Brock tells Professor Ivy that Butterfree like sweet things. A few berries should do the trick. Two assistants wants Brock to teach them about feeding. The other assistant reminds them about cooking dinner.

Everyone walks into the kitchen. The whole place is a mess! Professor Ivy says that the research has been using up most of their time. There was no time to clean the kitchen up. Brock decides to clean up the whole kitchen. He vacuums, washes the dishes, and does other things. Brock has even prepared a nice dinner. Professor Ivy and her assistants eat a lot of food.

It is nighttime, and everyone has gone to sleep. Professor Ivy and her assistants have stayed awake to observe the Vileplume. Brock comes out and brings a midnight snack along. The Vileplume are spreading their pollen out to protect their territory. A Raticate comes out and tresspasses the Vileplume's territory. It gets infected with the pollen. Professor Ivy runs to help Raticate, but she breathes in some of the pollen too. She tells her assistants to contact the Pokémon Center. At the Pokémon Center, Ash and Misty are disappointed that they had to wake up. Professor Ivy looks at the Raticate, and then she lays back in bed.

It's time for Ash and co. to leave. Brock and Onix are busy rebuilding the house. Brock has decided to stay with Professor Ivy. If Brock stays with Professor Ivy, he will learn more about Pokémon everyday. Ash accepts Brock's decision, and they shake hands with each other. Ash and Misty waves goodbye at Brock and Professor Ivy. They wonder how they will get back. Ash has the blimp tickets. Suddenly, out in the opening, a gigantic blimp stands strong. Two pilots (known as Jessie and James) takes Ash's tickets, and leads them on the blimp. The blimp then flies off. Jigglypuff walks near the blimp. It gets blown on the top of the blimp.

Ash and Misty want food. Team Rocket comes out. Meowth presses a button, and a cage traps Ash and co. Then Team Rocket says their motto. Team Rocket realizes that Brock isn't with them. They start to tease Ash and Misty about how they love each other. Ash tells Pikachu to use Thunderbolt. James interrupts him, and tells Ash and Misty that the blimp is a flammable gas tank. If Pikachu uses Thunderbolt, the blimp will explode. Jigglypuff comes in the blimp. It starts to sing a song. Before Team Rocket falls asleep, they get their parachutes on. The wind sucks Team Rocket and Jigglypuff out of the blimp. Ash and Misty are sleeping. With no one running the blimp, what will happen to them, and how will they survive?

English Official Summary

After making a crash landing onto Valencia Island, our heroes get directions to Professor Ivy's laboratory where the mysterious Pokéball is being held. Once at the laboratory, Brock realizes that Professor Ivy and her group of scientists are Pokémon breeders just like him! Suddenly Brock begins to feel at home and thinks about staying for awhile to continue his studies on Pokémon breeding.

Italian Official Summary

Dopo il rovinoso atterraggio sull'Isola di Valencia, i nostri eroi si recano al laboratorio della professoressa Ivy, dove si trova la misteriosa Poké Ball. Pensate la sorpresa di Brock quando scopre che anche la professoressa alleva i Pokémon!

Portuguese Official Summary

Após uma aterragem violenta na Ilha Valência, os nossos heróis vão para o laboratório da Professora Ivy, onde está a misteriosa Pokébola. Brock fica encantado ao saber que a professora e seus colegas são criadores Pokémon!

Spanish Latin America Official Summary

Tras un aterrizaje forzoso en la Isla Valencia, los chicos van al laboratorio de la Profesora Ivy, donde está la misteriosa Pokébola. Brock se asombra al descubrir que la profesora y sus colegas también son criadores Pokémon.

Spanish Official Summary

Después de un aterrizaje forzoso en Isla Valencia, nuestros héroes se dirigen al laboratorio de la Profesora Ivy, donde se encuentra la misteriosa Poké Ball. Brock está encantado al descubrir que la profesora y sus colegas son también criadores Pokémon.

English Great Britian Official Summary

After making a crash landing onto Valencia Island, our heroes get directions to Professor Ivy's laboratory where the mysterious Pokéball is being held. Once at the laboratory, Brock realizes that Professor Ivy and her group of scientists are Pokémon breeders just like him! Suddenly Brock begins to feel at home and thinks about staying for awhile to continue his studies on Pokémon breeding.

Dutch Official Summary

Na een noodlanding op Valencia Island vinden onze helden het lab van Professor Ivy waar de geheimzinnige Poké Ball wordt bewaard. Brock ontdekt tot zijn vreugde dat de professor en haar collega's mede Pokémon fokkers zijn!

French Official Summary

Après s'être écrasés sur l'Île de Valencia, nos héros se dirigent vers le laboratoire du Professeur Flora, où se trouve une mystérieuse Poké Ball.

German Official Summary

Nach ihrer Notlandung auf der Valencia-Insel erhalten unsere Freunde die Wegbeschreibung zum Labor von Frau Professor Ivy, wo sich der geheimnisvolle Pokéball befindet.

Danish Official Summary

Efter en nødlanding på Valenciaøen finder vore helte vej til professor Ivys laboratorium, hvor den mystiske Pokéball opbevares. Brock bliver henrykt, da han opdager, at professoren og hendes kolleger også er Pokémon-avlere!