Satoshi and his friends become lost in an unknown wasteland. They eventually come across a “Water Pokémon Show” performed by Hiromi, the star of the Mariner Troupe. Hiromi is a descendant of the Water People, a group that can communicate with water Pokémon, and she tells the heroes the legend that has been passed down by her people for generations. According to the legend, a temple the Water People built, called “The Water Temple Akuusha”, rests somewhere in the ocean, and a treasure known as “The Water Crown” is hidden there. It is said that no one has ever seen this treasure, but that changes when a Pokémon Ranger named Jack Walker (aka Jackie) appears to chase after it. Jackie is on a top‑secret mission that has him p...