As Ash and his friends journey to Crown City to join the crowds watching the Pokémon Baccer World Cup, mysterious forces are in motion that could bring untold misfortune to them all! What secrets does Zorua, a Pokémon they befriend along the way, hide? Why is the powerful Zoroark rampaging through the city, and what does the appearance of the Legendary Pokémon Raikou, Entei, and Suicune mean? What has brought Celebi back to the city at this precise moment in time for the first time in 20 years? And what will happen when the paths of all of them come together in one time and place?