Once every thousand years when the Millennium Comet is visible in the night sky, Jirachi awakens from his slumber. But when he awakens this time at a traveling circus, he's got a whole new set of friends by his side: Ash, Pikachu, Max, and the whole gang. But soon, they must rescue Jirachi from the clutches of an evil magician and former scientist named Butler who want to harness Jirachi's incredible energy to bring to life one of the most legendary and powerful Pokémon of all!