Pokémon Ultimate Journeys

A meteorological station is under attack by both Teams Aqua and Magma, who hope to capture the powerful Pokémon, Castform, which is able to control the weather at will. To make matters worse, when Ash and friends arrive at the station, they bring Team Rocket hot on their tail. Can a handful of young Pokémon trainers and this mysterious new Pokémon possibly prove to be a match for three powerful crime syndicates?