Ash and friends arrive in a town were the local Ghost and Psychic pokemon are having a huge fight.
Munchlax and Chimecho are ill and are taken to a summer house belonging to James' grandparents who don't know about James and Team Rocket.
During a battle, Mudkip evolves into Marshtomp and ends up falling in love with a Flaaffy.
Ash challenges Greta to a battle for his second Frontier Symbol in a battle using Snorlax and Grovyle.
The gang arrive near a daycare centre that breeds eggs for new trainers when Team Rocket comes up with a plan.
May competes in her next contest where another competitor enters but his family have doubts.
The gang come across a pond but a businessman with a grudge against it demands that it be shut down.
Going for his third frontier symbol, Ash challenges Tucker in a match that involves a double battle using Swellow and Corphish.
The gang come across an Elekid that has absorbed too much electricity and is causing trouble.
The gang come across the legendary Celebii who can travel in time as a Pokémon Ranger is trying to protect it.
The gang take part in a Ninja training school where the encounter a Bonsly who is accused of stealing berries.
May's egg is about to hatch but the Pokémon centre is a bit rundown as May and Meowth end up in the past.
Ash competes for his next Frontier Symbol using Pikachu and Donphan against Lucy.
The gang compete in a Pokémon orienteering competition but whilst James also competes, Meowth and Jessie plot to steal Pokémon.
May competes in the Wisteria Contest using her Squirtle and Munchlax but finds out that Harley is taking part as well.
While on the way to May's next contest, Ash and friends must stop at a nearby island to switch to the ferry to the next island. They let their Pokémon out to play and Donphan, still as playful as ever, tries to play with some Rhyhorn, only to be chased by their parents. After being saved by Nurse Joy and her Meganium, Grovyle gets into a conflict with a wild Tropius and beaten badly. Meganium heals Grovyle and Grovyle falls in love with her. However, Meganium and Tropius love each other! Now Grovyle decides to battle Tropius again to get revenge, and win Meganium's love!
May takes part in the Chrysanthemum Island contest but finds the invitation isn't from Drew but from a fan of hers.
Ash and friends have finally arrived on Metallica Island, the location of the Battle Palace. Before challenging the Frontier Brain, Ash does a little training hoping to boost Sceptile's confidence. However, Sceptile still can’t muster the strength needed to use attacks and runs into the woods frustrated. Ash and Pikachu quickly run after Sceptile, but once the get on the woods, they are attacked but a swarm of Beedrill and are knocked into the river! Ash manages to save Sceptile, but Pikachu is swept away! Ash and Sceptile manage to get of the river and take a rest for the night, and Pikachu also manages to get out of the river. An old man finds Pikachu and helps to heal him. When Scott appears at the Pokémon Center, he reveals to the others that this is the time of year when the Kakuna evolve and Beedrill will attack anything to protect them! Can Ash manage to find Pikachu, boost Sceptile’s confidence, and get out of the woods without being stung?
Ash challenges Spencer to a battle trying to gain his next symbol using Sceptile, Swellow and Heracross.
Split up from their trainers after an attack, Bonsly and Mime Jr. find themselves sought after for taking part in a movie.
In a dark alley three kids come face to face with the mysterious "Red Lighting". One kid sends out his Poliwag only to have it beaten and scribbled on. Then, Ash and the others arrive in the same city. Nurse Joy tells them of Red Lighting and how he is unbeatable. While visiting a park, May's Squirtle runs off and is attacked by Red Lighting and is easily defeated. After following Red Lighting to a house on the top of a skyscraper, they find out it is just a Scizor that belongs to a little girl, however she has no plans to stop her little plan. Now Ash decides to stop her for good.
May finally arrives in Gardenia Town ready to win her Fourth Ribbon. She gains a nice surprise when she finds out the Eevee has learned Dig. While May prepares for the contest, Brock meets another Pokémon Breeder named Yuma. After seeing his Pokémon skills, she convinces him to enter the Gardenia Contest. After amazing appeals by Squirtle and Bonsly, both May and Brock make it to the battle rounds. Will May be able to beat her friend in order to win her Fourth Kanto Ribbon?
The gang come across a Smoochum but trouble erupts from three Jynx when Team Rocket steal Smoochum.
As Ash and the others finally arrive at the Battle Tower, Ash does some last minute training with Pikachu. He is suddenly attacked by a Beedrill and a girl comes to his rescue. After sending Beedrill away they are attacked by a Gyarados and she once again talks to him and helps him calm down. Soon Team Rocket attacks wanting Pikachu and this human who can talk to Pokémon. After fending Team Rocket off, she introduces herself as Anabel. Before Anabel can properly introduce herself, Ash runs off to the Battle Tower, only to find out Anabel is the leader. As the battle begins, Ash quickly falls behind as Anabel can speak to Pokémon through telepathy. Can Ash manage to get past her special ability and win his Sixth Frontier Symbol?
Having lost his first match against Anabel, Ash prepares for a rematch still using Pikachu, Tauros and Corphish.
The gang come across Solana again who is investigating the appearance of the legendary Deoxys.
Team Rocket teams up with Ash, Brock and May after Deoxys has taken Max and Meowth into another dimension.
The gang come across a Sudowoodo which is different from others in the fact that it is completely gold and has runaway from its trainer.
May arrives in time for what is the final contest before the Grand Festival but many competitors are taking part.
As the battle rounds for the Mulberry Contest begin, James and Meowth trick Ash, Brock, and Max into a huge metal box so that they can't cheer May on, in hopes that it will cause her to lose. Harley is more determined then ever to make sure May loses. Jessie and May easily breeze through the battle rounds. As the final round arrives, May sticks with her trusty Squirtle and Jessie stays with Harley's Banette. Will May be able to beat Jessie and win her final ribbon so she can compete in the Grand Festival? And what about Ash and the others, can Drew rescue them in time?
Team Rocket split up following another defeat as the gang come across a battle centre run by Cassidy and Butch.
While they are on there way to the Battle Pyramid, Ash and the gang decide to stop at the Pewter Gym and see Brocks Family. When they finally arrive to there suprise, the Pewter City Gym has been made over with a different scenery before. As even more of a shock Brock learns that his Onix has evolved into a Steelix!
After that a Delibird, actually thinking that Jessie and James were Butch and Cassidy, gives Jessie and James a Charizard and Aggron. And now they are trying to take over the gym!
Ash heads towards the Battle Pyramid to challenge the final Frontier brain but on the way gets possessed by an evil king.
A group of Aipom are steal various objects to pay tribute to a Giant Slaking statue which end up including Ash's hat and May's Ribbon cage.
May arrives for the Kanto Grand Festival where Harley and Drew are also competing as well as a new trainer Solidad.
The Grand Festival continues with appeals as Drew shows off his new Absol. May, Harley, and Solidad also do great appeals and the four of them all make it into the Top 16, which are the battle rounds. In the first match, May has to battle Harley. She chooses Munchlax and Eevee while he uses Cacturne and his new Wigglytuff. Eevee and Munchlax easily take out Cacturne but Wigglytuff badly beats them back. After devising a perfect strategy, May wins. Soon after, Solidad and Drew beat their opponents. Now in the Top 8 May must face Drew! She selects Combusken and Squirtle and Drew picks Absol and Flygon. Will May be able to beat her long time rival?
As May and Drew continue their battle. Drew quickly gains a lead with a new combo move. As the battle progresses, May manages to finally defeat Flygon with Squritle. However, her victory is soon spoiled as Absol quickly takes out Squirtle. Combusken and Absol continue to battle with neither side letting down. During the battle, Combusken learns Overheat and is able to strike back with amazing power. As the battle ends, it comes down to May winning by just a few points! After the battle, Ash finally catches the troublesome Aipom. May then finds herself up against Solidad and her amazing Pidgeot and Slowbro. Can May defeat Solidad and go on to win the Grand Festival?
Ash's new Aipom gets into trouble when a crown gets stuck on its head and rules state the wearer will be crowned king.
Heading to rechallenge the battle battle pyramid, the gang come across a Chatot who likes to repeat what people say.
The gang come across a dispute taking place in a jungle involving Weavile and Sneasel which leaves Aipom injured.
Ash arrives for his rematch against Brandon and brings his Torkoal back for his match against Registeel.
After their defeats, Ash and May think about their futures but they get a surprise when Drew and Professor Oak arrive.
Ash is training for his rematch but Nurse Joy falls ill when a major accident occurs injuring several Pokémon.
Getting for his rematch, Ash recalls Charizard, Squirtle and Bulbasaur to spend sometime with them in the mountains.
Ash begins his rematch with Brandon but Dusclops has knocked Charizard out leaving him with Bulbasaur, Squirtle and Pikachu.
Ash and May enter a Pokemon Contest. They end up battling each other in the last round! Then Team Rocket comes. May 's Combusken gets all crazy! Combusken then evolves into a Blaziken and sends Team Rocket blasting off. Now it's Sceptile vs. Blaziken in the last round. Brock thinks Blaziken will win, though Max really doesn't know... ...
As the results of Ash and May's battle reveal a startling outcome, the two freinds face a crossroads when May considers entering the Johto Leauge. Returning to Pallet, Ash reunites with Gary, but a battle with his new Pokemon proves dangerous for Pikachu, leaving Ash making a bold decision to enter a new region...