Pokémon Heroes

Ash and Pikachu travel to Alto Mare, the Water Capital of the world, where they meet two new Pokemons, Latias and Latios, a brother and sister team who are protecting a treasure called the Droplet of the Heart. However, the treasure is the target of a pair of thieves, Zanna and Rion and when the town is accidentally flooded, the treasure is endangered – can the Pokemons save it?