Ash and his friends must stop a greedy media mogul from using the shape-shifting Zoroark to capture the time-travelling Celebi.

Kenta, a Pokemon master in the making, meets up with his childhood friend, Marina, at a Pokemon Center, to see how their skills have developed. Their battle is interrupted by a thunderstorm and the arrival of Bashou and Buson, two Rocket-dan members using the Crystal System (which attracts Electric-type Pokemon). Their ultimate goal is to, under the guidance of professor Shiranui, bring Pokemon back to Sakaki. Kenta and Marina stumble upon this plan, and they try to stop it, but things get more difficult when the legendary Pokemon Raikou is captured.

It's double trouble in the big city! Pikachu is lost, and the Pichu Bros. must help their new pal get back before Ash notices his Pokémon is missing. It's a race against the clock that has the duo dragging Pikachu into one disaster after another!

One day, Pikachu and its friends are walking along when they suddenly fall through a Diglett hole and into Pokémon Valley, a secret location that no one knows about. Pikachu and its buddies tell the Pokémon that they could use some help looking for Togepi, who fell through the hole first. The group sets off and eventually finds Togepi in the Exeggcute nest—but one of the Exeggcute is missing. That leads the group on another hunt; this time, though, Pikachu and its friends come back to the nest empty-handed. That’s when a storm begins to brew, filling Pokémon valley with roaring thunder and gusts of wind that almost blow the friends—and the Exeggcute nest—away! Are the friends going to be able to keep the nest safe and reunite the Exeggcute?

The Team Rocket leader, Giovanni, has found Mewtwo in a remote area of the Johto region. As Giovanni tries to re-capture Mewtwo, Ash and his friends are kidnapped by Domino, a new Team Rocket member, while trying to rescue Pikachu from Jessie and James. The Clone Pokemon are also captured and are then used as bait for Mewtwo. The situation then becomes a battle between the wills of Mewtwo and Giovanni; and Mewtwo also tries to discover if it and the clones have a purpose in life, even though they are products of science.

When the creator of the world, Arceus, comes to pass judgement on humanity for the theft of the legendary Jewel of Life, Ash and his friends are sent back in time to possibly reverse the events that led to Arceus' vendetta.

When the sadness of her father's disappearance gets to Molly Hale, she unknowingly uses the Unown to create her own dream world along with Entei, who she believes to be her father. When Entei kidnaps Ash's mother, Ash — alongside Misty and Brock — invade the mansion looking for his mom and trying to stop the mysteries of Molly's Dream World and Entei!

When Lawrence III's scheme to capture the Legendary Pokémon Lugia upsets the balance of nature, it is up to Ash Ketchum and his friends to save the world.

In order to escape a greedy Pokémon hunter, Celebi must use the last of its energy to travel through time to the present day. Celebi brings along Sammy, a boy who had been trying to protect it. Along with Ash, Pikachu, and the rest of the gang, Sammy and Celebi must encounter an enemy far more advanced than the hunter, with the fate of the forest hanging in the balance.

On their way through the Battle Frontier, Ash and friends meet up with a Pokémon Ranger who's mission is to deliever the egg of Manaphy to a temple on the ocean's floor. However, a greedy pirate wants the power of Manaphy to himself.

Ash and friends (this time accompanied by newcomer Dawn) arrive at an idyllic village on their way to their next Pokemon contest, where chaos will soon erupt with the prophecy of two Pokemon Gods (Dialga and Palkia) and the arrival of a mysterious, seemingly deadly Pokemon named Darkrai, which has the power to distort space and time.

The devious leader of Team Rocket Organization, Giovanni, has a fervent ambition to take control of the Pokémon world through both financial and military means. To achieve his military needs, he covets a Pokémon stronger and more adept than any other, a veritable living war weapon, so he enlists a scientist named Doctor Fuji to create this being from the DNA of the ancestor of all Pokémon and most powerful of Pokémon, Mew, which Fuji had found on a previous jungle expedition. Fuji accepts, for he is heavily into the prospect of cloning to create and restore life itself, because of his love for his deceased daughter, Amber.