Pokemon - The Movie: 5 - Pokemon Heroes (DVD)

Ash (Veronica Taylor), Pikachu (Ikue Ootani) and the rest of the Pokemon gang try and stop a pair of thieves hiding out in the canals and alleyways of Alto Mare, the water capital of the world. Two Pokemons join them on their adventure, a brother/sister pair named Latias (Megumi Hayashibara) and Latios (Masashi Ebara) who are protecting the Droplet of the Heart - a valuable treasure.