The giant sized Pokémon are rampaging about!? Satoshi and Gou set off to research the strange phenomenon taking place there in the Galar Region. Once they arrive, our heroes come face to face with the giant, rampaging Pokémon themeselves! In order to save everyone from this danger, Satoshi fights alongside the King Dande while Gou works with the aspiring Pokémon Professor Sonia to try to unravel the mystery behind what's going on. Its turn out the rampage is being caused by an organization scheming behind the scenes to recreate the "Black Night" , a great catastrophe that befell the Galar Region a long, long time ago! Once all the mysteries are solved the revival of this great catastrophe will roar out across the land! Just as it seems as through the entire Galar Region is being thrown in a whirlwind of chaos the two Legendary heroes awaken from their slumber.