In the Forest of Okoya, Koko is a feral child who has been raised as a Pokémon by the Mythical Pokémon Zarude. Koko has grown up never doubting that he is a Pokémon even though he can't really use any sort of moves. Ash Ketchum and Pikachu meet Koko and help him protect the Great Tree from the crooked scientist Dr. Zed.
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.
In the underground Diamond Domain, where many Carbink live, the Mythical Pokémon Diancie serves as ruler. The Heart Diamond that sustains the land is beginning to fall apart, and Diancie is not yet strong enough to create a new one. While seeking help from the Legendary Pokémon Xerneas, Diancie encounters a group of thieves who want to take control of its diamond-producing power–and who awaken the Legendary Pokémon Yveltal from its cocoon in the process! Can Ash and his friends help Diancie discover its true power, stop Yveltal’s rampage, and save the Diamond Domain?
Ash, Pikachu, and their friends come to a desert city by the sea. Here they meet the Mythical Pokémon Hoopa, which has the ability to summon things—including people and Pokémon—through its magic rings. After a scary incident, they learn of a story about a brave hero who stopped the rampage of a terrifying Pokémon long ago. Now, the threat that has been bottled up for years is in danger of breaking loose again.
The Kingdom of the People of the Earth once ruled over the land, but now all that remains is the Sword of the Earth. in the city of Eindoak. Satoshi, Iris, and Dent arrive in Eindoak during a harvest festival's Pokémon Tournament and meet the legendary Pokémon Victini who wishes to share its powers of victory to someone. Elsewhere in the city, a descendant of the People of the Earth named Dred Grangil has arrived who seeks to revive the kingdom's power with the Sword of the Earth, bringing them back into power over the land, and Satoshi and his friends must stop him before he destroys the land along with Victini.
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.
Ash and his friends must stop a greedy media mogul from using the shape-shifting Zoroark to capture the time-travelling Celebi.
A young athlete whose running days might be behind her, a compulsive liar, a shy researcher, a bitter old woman, and a little girl with a big secret—the only thing they have in common is the annual Wind Festival in Fula City. The festival celebrates the Legendary Pokémon Lugia, who brings the wind that powers this seaside city. When a series of threats endangers not just the festival, but all the people and Pokémon of Fula City, it’ll take more than just Satoshi and Pikachu to save the day! Can everyone put aside their differences and work together—or will it all end in destruction?
When Giratina is discovered to be able to create parallel dimensions, it's up to Ash and his friends to stop a mysterious stranger from using its powers for evil.
As the sun shines down, Wigglytuff was setting up Pokémon balloons, Lombre was setting up Pokémon masks, Mudkip was setting up drinks, Snorunt was making ice cream, and Swablu was making Pokémon prize bags for stands at the festival. Pikachu, Plusle, and Minun run on the beach and stop to see the Pokémon festival which also has a large stage in the middle. They are happy to be at a festival.
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!
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.
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.
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.
Determined to prove its superiority, a bio-engineered Pokémon called Mewtwo lures Ash, Pikachu and others into a Pokémon match like none before.
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 these Pokémon friends begin the holidays with Christmas quarreling, can Pikachu restore good cheer? Then, on a winter's eve, when not even a trailer is stirring, the Pokémon are making a Yuletide discovery you won't believe!
Deoxys, a Pokémon from outer space, terrorizes the high-tech city Ash Ketchum and his friends are visiting.
In the legendary past, before Poké Balls were invented, an aura-guiding hero Pokémon named Lucario sensed two groups of armies about to clash, and a threat of a massive war in front of Oldoran Castle in Kanto that would leave no survivors. He transferred this message to his master, the legendary hero Arlon, while he was being attacked by a violent group of Hellgar. During the battle, his sense of sight was lost and he was rendered unable to see. He used the detection of his Aura, and so with the offensive Wave Bomb, he eliminated them. Though by the threat, the queen of Rota, Lady Rin was resolute to die with her civilians, and so Arlon made a choice.
Ash, Pikachu and the gang try and stop a pair of thieves hiding out in the canals and alleyways of Altomare, the age-old water capital. Joining the adventure are two new legendary Pokémon, a pair of siblings named Latias and Latios, who serve as peacekeepers and protectors of the Soul Dew — a priceless treasure with a mysterious power.