It is the most anticipated event of the year and, as hundreds flock to Crown City to watch the exciting competition unfold, Ash and his friends encounter a mysterious new Pokémon they have never seen before. But when the three Legendary Pokémon Raikou, Entei and Suicune suddenly arrive and begin rampaging through the streets, it's up to Ash and his companions, along with their new Pokémon friend Zorua, to uncover the secret behind the immense and powerful forces at work.