At the Altar of the Sunne on Poni Island of the Alola Region, Ash and Lillie played the Sun Flute and Moon Flute together with the hopes of evolving Nebby so that he could take them to Ultra Space. Instead, Ash would end up undergoing on unexpected transformation...

Having been transformed into a Solgaleo, with his signature cap now looking rather tiny as it sat on his head, Ash stared awkwardly at his new paw while Lillie - dwarfed by his massive lion-like body - watched in pure shock and Pikachu looked on with concern, all three of them silent for the moment.