Alola, Dark Knight

Mew has foreseen the Ultra Beasts return! So in desperation, he goes to Earth in search of a champion. He find that champion in Bruce Wayne, who decide to help after Mew saves his life/pressure from the Justice League. Now Bruce, undercover as a Pokemon trainer journeys through Alola, taking part in the island challenge as he finds out who wants the Ultra Beasts to come to Alola!