Ash, Pikachu 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. Joining the adventure are two new Pokémons, a brother/sister pair named Latias and Latios who are protecting the Droplet of the Heart – a valuable treasure. Written by IMDb Editors

In a magical water city of canals and mazes, Ash, Pikachu and the rest of the gang face off against a pair of slick thieves who plan to steal an awesome and dangerous jewel called the Soul Dew guarded by Latios and Latias.