Where is airing: Cartoon Network
How many episodes in 4 season: 52 episodes
Ash arrives in Goldenrod City and meets Whitney. After seeing some of the sights, he battles her in a deceptively easy Gym Battle.
Whitney takes our heroes to her uncle's Miltank farm in the outskirts of Goldenrod City. Here they sample the finest in Miltank dairy products and learn how to groom and care for these Pokémon. Ash realizes this is a great opportunity to study Miltank first-hand and hopes it will help him against Whitney's Miltank in their next battle. After learning about Miltank and coming out victorious in a battle against Team Rocket, Ash realizes the answer to overcoming Whitney's strongest Pokémon is good old-fashioned team-work.
The bug catching competition is taking place and Ash decides to take part but Casey has also entered.
With the river blocking their path, a man offers a lift across the river but asks for a Sudowoodo.
The group comes across a castle where various Pokémon are being used for medical purposes.
An old man is looking for someone to take over his dojo and seeing Ash and Bulbasaur feels Ash is suitable.
The groups Pokémon are playing with a beach ball only for a group of Aipom to cause havoc.
A Seaking fishing competition is taking place with Ash and Misty taking part but competition is tough.
A Pokémon beauty contest is taking place and Vulpix's original trainer Suzy enters with Brock and Vulpix.
Ash, Misty and Brock meet up with Gary and his Umbreon who has evolved from Eevee.
Ash's group and their new forest patrol friend must work fast to save the Pikachu and Togepi after being kidnapped by Team Rocket.
A village is having a Wobbuffet festival where battles aren't allowed but gatecrashers soon arrive.
Ash, Misty and Brock encounter Duplica again with a new Ditto who can transform into miniture versions.
Snubbull is still following Team Rocket whilst its owner is looking for Snubbull.
A tournament is taking place using Grass type Pokémon so Ash enters with Bulbasaur.
Using Metronome sends Togepi teleporting away from the others as they set out to find Togepi.
As the group arrives in Ecruteak City, the Ghost types in the gym are causing trouble.
Ash takes on Morty and his ghost types and Noctowl may have a useful strategy.
The Famous Kimino Sisters all own a member of the Eevee family but the youngest hasn't evolved her Eeevee.
A trio of troublesome Murkrow delight the group only to steal Ash's badges.
An artist by the name of Gan Gogh is trying to paint something unusual involving Remoraid.
Continuing with Todd, their search for Articuno, Ash and friends no sooner stop for a snack break than a trio of Swinub appears and makes off with Misty's rice cake. The children jump to pursuit and soon learn that these Pokémon are in the employ of a father-daughter team of water prospectors. The Swinub's keen sense of smell allows them to detect substances buried deep underground. Impressed by thier operations, Team Rocket decided to pirate the idea and its key Pokémon and turn them to their own gain.
A bag of Fire Stones are being trasnported when Team Rocket attacks and steals them.
Team Rocket traps Pikachu in a box with the only key in Wobbuffet who goes seperated.
A Sumo Tournament is taking place with a weight category so Ash enters with Snorlax.
A man claims to be able to understand what Pokémon are saying but is on the run from Officer Jenny.
As our heroes and their Pokémon enjoy another fine meal prepared by Brock, Golbat begins to act strangely and flies away. Brock, Ash and Misty chase after the Flying-type and end up at an archaeological dig. When they meet the intelligent and beautiful archeologist, Tierra she explains her ultra-sonic equipment had just been destroyed and perhaps its errant waves attracted Golbat. She also tells our heroes of an ancient golden mask and scepter, once belonging to a queen who had the power to control all Pokémon. She is now looking for a buried temple said to contain these two priceless artifacts and asks Brock if his Golbat will use it's Sonic attack to help her locate the exact placement of the temple. Overhearing our heroes, Team Rocket employs their latest mechanical menace, the Dig-a-Tron to beat the gang to the temple. When Jessie dons the mask and scepter she has the power to control all Pokémon, even Pikachu! What will become of the Pokémon under Jesse's rule?
A group of Smeargle are painting a town different colours which annoys the townsfolk.
At the end of a long day, our heroes search for a Pokémon Center in a small town near Olivine City. Unable to locate one they ask a local lady for directions. She explains the nearest Pokémon Center is ten miles away! Too exhausted to extend today's journey, the gang decides to set up camp in a local park. As he gets water from a nearby fountain, Brock notices a Nidorina approaching to take a drink. Running after Nidorina is her trainer, who trips and almost falls into the fountain. She is narrowly saved by Brock and immediately falls head over heals in love with him. Introducing herself as Temaku, she insists Brock and his friends stay with her at her father's house. How will Brock handle a large does of his own medicine from the smitten Temaku?
Ash becomes stuck in a Electric Plant with Chikoria with Electric types attacking.
After several more run-ins with its trainer, Bayleef gets scolded and decides to run away. However, it slips and falls into the river. Our heroes follow the scent, then follow the river which leads to an old woman's house.
During a festival, Misty has her fortune told by a lady with a Natu.
When our heroes happen upon an unusual formation in the middle of a grassy field, Brock believes it is a crop circle...placed there by aliens! Just then, something comes hurtling out of the sky towards them. A far away voice calls down an apology for almost hitting Ash with the object. Skyler, a boy training for a hot air balloon race, introduces himself to the gang and explains he was practicing for the upcoming event. Getting a marker as close to the center of the large, circular target by throwing it from the hot air balloon is one aspect of the competition. Intrigued by the hot-air balloon racing circuit, Ash quickly makes up his mind to enter as well. When Brock reminds him they don't have a chance of winning without a hot air balloon, Skyler's father says he has something to help them out. Pulling a balloon out of his shop, he begins to fill it up and to our heroes surprise, it's a Pikachu shaped hot air balloon! When Team Rocket decides to enter the race as well, Jesse and James sabotage several of the balloons the night before the big event.
A Smoochum has been dumped by its trainer Brad and it becomes clear he has no more interest in her.
On the way to Olivine City, Ash and friends run into a girl who is trying to build a tunnel threw a mountain, but leaking water is causing her Rock Pokémon to stop digging. In order to finish the tunnel, Ash and friends decide to help her capture a Rhydon that likes water that lives nearby.
Kecleon has the ability to disappear which causes trouble for a town with a pair of them.
Ash and his pals come to a Pokemon Centre in a quiet little forest when they encounter two Chanceys and someone wearing a scuba suit, that person appears to be Nurse Joy! But she is different from all the other Nurse Joys, because this Nurse Joy is great at handling Water Pokemon, and Misty is excited to meet her but what will she expect?
Meowth along with Cyndaquil are seperated from their groups and are lost in a desert.
Arriving in Olivine City, Ash finds the gym leader too busy to accept battles.
After getting the medicine for Sparkle, Ash goes to challenge the Cianwood gym.
