In the trailer, Satoshi (Ash) has arrived at the Kalos region, and meets not only his new companions Citron, his younger sister Eureka, and Pokémon trainer Serena, but also encounters many new Pokémon in the region. Team Rocket have also returned to cause trouble, while Satoshi learns of a new kind of evolution called Mega Evolution. In the first episode of the anime, Satoshi must deal with a Garchomp that has Mega Evolved as it causes havoc in the city.
The latest generation of Pokémon games, Pokémon X and Pokémon Y, will launch worldwide on October 12. Starting that same day, Pokémon: Black and White: Adventures in Unova and Beyond will show "some exciting new Pokémon and characters from Pokémon X and Pokémon Y" in the United States.
The Cartoon Network will then show two episodes from Pokémon the Series: XY in the United States on October 19, right after the American premiere of the latest Pokémon film, Pokémon the Movie: Genesect and the Legend Awakened (Gekijōban Pocket Monster Best Wishes! Shinsoku no Genosekuto: Myuutsū Kakusei). The Japanese broadcast of the anime will begin on October 17.