Ash, Pikachu, and their mates come to a desert metropolis by the ocean. Right here they meet the Legendary Pokémon Hoopa, which has the power to summon issues—together with folks and Pokémon—by means of its magic rings. After a scary incident, they be taught of a narrative a couple of courageous hero who stopped the rampage of a terrifying Pokémon way back. Now, the risk that has been bottled up for years is at risk of breaking unfastened once more.