Pokemon (2019): Kami to Yobareshi Arceus

Synopsis

A visit to the Sinnoh region turns into a high-stakes adventure when Ash, Pikachu, and friends join forces with powerful Pokémon to confront a looming threat! When Ash, Goh, and Dawn receive a mysterious message from the Mythical Pokémon Arceus, they meet up with Brock and head to Mount Coronet to investigate. There, they find a rampaging Heatran and the commanders of Team Galactic, who are determined to find their missing leader by opening a gate between dimensions. With a trio of Legendary Pokémon and Sinnoh Champion Cynthia on their side, our heroes have lots of help, but they’ll need all they can get to save Sinnoh from being destroyed! (Source: Bulbapedia)