While traveling to their next destination, a bright and sunny day quickly turns to a storm and our heroes Ash, Brock, Misty and Pikachu run to find some shelter. Misty exclaims they are in the middle of no where but they come to a mansion and they quickly run inside.

To their surprise, the mansion is dark and empty and Brock looks around and believes it looks like a theater. Ash's attention quickly turns to a 'Pikachu' noise behind him and he is surprised to see another Pikachu beside his own Pikachu. Misty thinks its cute and picks up the Pikachu only to be surprised by its odd looking face. She quickly drops it as she doesn't know what's wrong with the Pikachu. Brock thinks it could be a new kind of Pikachu after he examines it and Ash wants to capture it.

Ash's Pikachu Thundershocks the other Pikachu and just as Ash throws his Poke ball towards it to capture it, another Poke ball knocks it out of the air. Ash, Brock and Misty turn their attention to the side of the room where the Poke ball was thrown and they notice a guy that is dressed just like Ash standing by himself. Brock is quick to realize that it isn't a guy though and Misty wonder's how Brock could tell. Brock tells her that it men's intuition.

Ash introduces himself to the stranger who then states her name is Duplica from the House of Imitay. Duplica's Ditto then transforms back to its normal state. Ash gets his dex out and it states that Ditto is the transform Pokémon and that it is able to rearrange the cells of its body and assume any form. Brock then asks Duplica why Ditto wasn't able to transform completely as its face wasn't very good. Ash really isn't impressed with Ditto because it only knows one attack, so Duplica challenges Ash to a battle to show him its true power.

Ash and Duplica go up on stage for the battle as Brock and Misty, who is eating popcorn, watch the battle. Ash sends out his Bulbasaur to battle. Duplica already had her Ditto out and told it to transform. Ash's Bulbasaur attacks with Razor Leaf by Duplica's Ditto quickly counters by using Vine Whip to knock all the leaves away. Everyone is surprised by the fact that Ditto could emulate attacks as well. Ash quickly gives up after Ditto managed to use Vine Whip to tie Bulbasaur up so it couldn't move.

Duplica then takes Ash and friends into her wardrobe room where she changes into Nurse Joy, Officer Jenny, and then Misty. Ash isn't impressed though and is looking out the window pondering his defeat. Brock and Misty come over to cheer him up and then told him that Duplica is a tough trainer as she must have studied all the Pokemon and all their possible moves to know which moves Bulbasaur could use. Duplica then tells everyone that she wants to become the greatest Ditto Master and a big star, not a Pokemon Master like Ash.

Duplica explained the reason that no one was visiting her theater anymore to watch her and Ditto because people didn't like the fact that Ditto couldn't transform properly. She hoped that peole would stop by and watch as they traveled by. Suddenly the lights go out and Team Rocket appears on the stage and do their motto.

Team Rocket tells Ash that they aren't interested in Pikachu this time and Meowth quickly jumps off the stage and captures Ditto. James Weezing is sent out and uses Smokescreen to allow Team Rocket to make a getaway. They escape to a nearby house where Jessie and James ask Ditto to transform into a Dratini. They then pretend to be the boss and explain to Ditto why it needs to transform. Jessie then tells James that before they give Ditto to the boss they should have some fun.

Jessie gets out a picture of her first boyfriend and then asks Ditto to transform into what he would look like now. James quickly is fascinated by Jessie's story and watches as Ditto performs the transformation. Meowth and James fall on the floor laughing as it transformed into the picture with the frame and it still had the funny face as it couldn't transform perfectly. Angry, Jessie tells Ditto to transform into Dratini while holding up a book with a picture of a Ditto. Instead of transforming into the Dratini, Ditto transformed into a book.

Misty tells Duplica that they will find her Ditto and Brock explains that they have already sent out Pidgeotto and Zubat out on surveillance. Pidgeotto and Zubat return and tell Pikachu that they've located Ditto and Team Rocket. Before leaving, Duplica says she has a plan.

Back at the house, Ditto was forced to turn into Meowth but it once again wasn't able to master the face. Meowth was mad and threatened to use its claws if it didn't get it right. Ditto tries again and this time it was able to get the face perfect. Meowth then asks it to transform into Dratini but before it could Ash interrupts. Ash, Brock, Misty and Duplica imitate the Team Rocket Motto while dressed in Team Rocket uniforms. This quickly insults James and Jessie and gets them mad.

Duplica then states she will be taking back her Ditto but she discovers that its hard to tell the difference between Meowth and the transformed Ditto. Jessie and James explain they were able to perfect its transformation and Duplica quickly thanks Team Rocket for their work which catches them by surprise. Jessie and James are touched and begin to cry. Ash suggests that since they seemed touched that they should just hand over Ditto and forgo the battle. Jessie and James agree and hand over Meowth to Duplica.

Jessie and James then take off in the balloon but Duplica realizes that Meowth isn't her Ditto and throws Meowth into the balloon. Ditto then bites Jessie's hand and jumps out of the ballon into Duplica's arms. Jessie then opens the bottom of the balloon to reveal a canon. Duplica then tells Ditto to transform and it turns into a canon as well. Pikachu jumps into the Ditto canon and Pikachu flys into the air. Jessie shoots out a net from the canon but Pikachu uses its electric attack to shock everyone in the balloon and Meowth's claws end up popping the balloon. Team Rocket goes blasting off again.

Duplica then asks her Ditto to turn into a Pikachu but then Ash couldn't tell the two appart anymore. Duplica picks up her Ditto and it transforms back. Duplica reopens the Imitehouse and Ash and friends continue on their journey. In a forest, Jessie and James try to make up for loosing Ditto by getting Meowth into a Dratini costume.

English Official Summary

Being caught in a sudden rain shower, our heroes are obliged to seek shelter. In the middle of a clearing, they find a small, ghastly cabin. Dragging the reluctant Misty, Ash and Brock enter the cabin, instantly getting the impression that they are not alone. Could this be a haunted cabin? They soon discover that it is the Copycat house in which the trainer of Ditto lives. Intrigued by Ditto, Ash proposes a battle between Ditto and Pikachu.

French Official Summary

Pris dans une averse soudaine, nos héros sont obligés de trouver un abri. Au milieu d'une clairière, ils découvrent une petite maison sinistre.

German Official Summary

Unsere Helden suchen vor einem heftigen Regen Unterschlupf. Auf einer Lichtung entdecken sie eine kleine, gespenstische Hütte.

Italian Official Summary

Sorpresi da un acquazzone, i nostri eroi sono obbligati a cercare un riparo. Non è facile per Ash e Brock convincere Misty a ripararsi in una casa che non ha un'aria rassicurante...

Portuguese Official Summary

Pegos numa chuva repentina, nossos heróis rapidamente tentam procurar abrigo. Muito relutantemente, Misty é arrastada para uma cabana por Ash e Brock onde eles imediatamente sentem a impressão de que não estão sós!

Finnish Official Summary

Jouduttuaan sadekuuron yllättämäksi sankarimme yrittävät päästä suojaan. Vastentahtoista Mistyä mukanaan raahaten Ash ja Brock menevät sisälle taloon, ja huomaavat heti etteivät ole siellä yksin!

Spanish Latin America Official Summary

Atrapados en un repentino chubasco, nuestros héroes rápidamente buscan refugio. Tras arrastrar a una renuente Misty, Ash y Brock entran a una cabaña, ¡y de inmediato tienen la impresión de que no están solos!

Spanish Official Summary

Atrapados bajo un repentino chaparrón, nuestros héroes se ven obligados a buscar refugio. En medio de un claro, encuentran una pequeña y escalofriante cabaña.

English Great Britain Official Summary

Being caught in a sudden rain shower, our heroes are obliged to seek shelter. In the middle of a clearing, they find a small, ghastly cabin. Dragging the reluctant Misty, Ash and Brock enter the cabin, instantly getting the impression that they are not alone. Could this be a haunted cabin? They soon discover that it is the Copycat house in which the trainer of Ditto lives. Intrigued by Ditto, Ash proposes a battle between Ditto and Pikachu.

Dutch Official Summary

Door een plotselinge regenbui moeten onze helden snel schuilen. Vol tegenzin slepen Misty, Ash en Brock zich naar een huisje, waar ze meteen het gevoel hebben niet alleen te zijn.

Norwegian Official Summary

"Et plutselig regnvær tvinger våre helter til å søke ly. Motvillig blir Misty, Ash og Brock dratt inn i en hytte, og forstår umiddelbart at de ikke er alene!   "

Swedish Official Summary

När våra hjältar plötsligt hamnar mitt i en häftig regnstorm, skyndar de sig att söka skydd. Då de dragit med sig en mycket motvillig Misty in i en stuga, får de genast intrycket av att inte vara ensamma!

Danish Official Summary

Da vore helte bliver fanget i en regnbyge, prøver de straks at søge ly. Sammen med en modstræbende Misty går Ash og Brock ind i en hytte og får øjeblikkeligt følelsen af ikke at være alene!