After a scientific experiment leads to the creation of a clone of Mewtwo, he sets out to destroy the world. Ash and his friends then decide to thwart Mewtwo's evil plans.

This is the story of how Ash and Pikachu first met. At first, Pikachu was disobedient towards Ash, but Ash only wanted to be friends with Pikachu. On the day they set out from Pallet Town, both of them saw a Ho-Oh flying and they made a vow to meet it.

In this Pokémon adventure, a mysterious force binds Ash to the Mythical Pokémon Volcanion when it falls from the sky. Volcanion can’t get away, and Ash is dragged along as it continues on its mission. They arrive in a city of cogs and gears, where a corrupt minister has stolen the ultimate invention: the Artificial Pokémon Magearna, created 500 years ago. The minister plans to use Magearna’s mysterious power to take control of the mechanical kingdom. Can Ash and Volcanion work together to rescue Magearna? One of the greatest battles in Pokémon history is about to unfold!

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.

In a country called "Diamond Domain" lies the powerful Heart Diamond, which has served as the kingdom's source of energy and maintained the Ore Country for centuries. Many Carbink live in Diamond Domain, including their princess - the Jewel Pokémon, Diancie, who created the Heart Diamond. Diancie no longer has the power to control the Heart Diamond and her country is falling into chaos as a result. One day, Diancie meets with Ash and his friends and asks them to go on a journey to find the Life Pokémon, Xerneas, in order to restore the Heart Diamond. Standing in their way is the Pokémon of Destruction, Yveltal, who once stole all of the life in the Kalos Region. During their journey they are attacked by Team Rocket, as well as the jewel thieves Marilyn Flame and Ninja Riot. They are aided by Millis Steel and her father Argus, travelers who also encounter the Cocoon of Destruction.

The Kingdom of the People of the Vale once ruled over the land, but now all that remains is the Sword of the Vale. in the city of Eindoak. Ash, Iris, and Cilan 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 Vale named Damon has arrived who seeks to revive the kingdom's power with the Sword of the Vale, bringing them back into power over the land, and Ash and his friends must stop him before he destroys the land along with Victini.

The Kingdom of the People of the Vale once ruled over the land, but now all that remains is the Sword of the Vale. in the city of Eindoak. Ash, Iris, and Cilan 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 Vale named Damon has arrived who seeks to revive the kingdom's power with the Sword of the Vale, bringing them back into power over the land, and Ash and his friends must stop him before he destroys the land along with Victini.

The film opens with Shaymin as Dialga appears. Then, in the Reverse or Distortion World Giratina senses Dialga's presence, and flies up to the Real World to capture him. Dialga drinks, just as Giratina's portal opens up. Giratina then drags Dialga into the Reverse World. Shaymin is also catapulted into the Reverse World. As Dialga and Giratina fight, Zero observes the battle in his ship. Shaymin absorbs a dark gas and uses "Seed Flare," tearing a hole in the Reverse World and escaping. Dialga fires a laser at Giratina, enveloping her in a time loop and trapping her in the Reverse World. As Dialga escapes, Shaymin falls into a river.

In the legendary past, before Poké Balls were made; 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 Cameron Palace in Kanto that would leave no survivors. He transferred this message to his master, the legendary hero Sir Aaron, while he was being attacked by a violent group of Houndoom. 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 Aura Sphere, he eliminated them. Though by the threat, the queen of Cameroon, Lady Rin was resolute to die with her civilians, and so Sir Aaron made a choice.

A comet bearing a deadly Pokemon creature crash-lands onto Earth, terrorising a nearby high-tech city, where Ash, Pikachu and friends are currently visiting...