Medium Yoh Asakura enters a battle tournament held every 500 years, competing with other shamans in a bid to become the all-powerful Shaman King.

Every year the citizens of Fura City celebrate a Wind Festival. Where people live together with the wind. Long Ago, on the final day of the festival the Legendary Pokemon Lugia and bestow the blessings of the wind upon the people. This Film Focuses on Everyone's Story. from Lisa, a high school girl who is just starting out as a Pokemon trainer, to Karachi, a guy who can't stop lying to Torito, a researcher who lacks confidence in himself, to Hisui, an old lady who hates touching Pokemon, and Rarugo, a mysterious young girl who watches over the forest by herself.

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.