The Chosen One is a prophetic song from Pokemon the Movie 2000 - The Power of One, which is the second of the Pokemon movies.
Ash and friends are on their journey through a seemingly quiet chain of islands. Unbeknownst to them, a sinister Pokemon Collector is also traveling to the islands and capturing Zapdos, Moltres and Articuno.
But even with all their power, they are merely a stepping stone to an even greater prize: the guardian of the sea.
As Ash arrives at his latest destination the islanders have plans for him to take part in a ceremony to gather three elemental balls from different islands.
When the weather across the world goes out of control, this task takes on a new importance, as the capture of the Legendary birds has thrown the environment out of balance.
With Lugia's help, can Ash be the "Chosen One" that everyone turns to?