Pokémon Ultra Sun and Pokémon Ultra Moon are enhanced versions of Pokémon Sun and Pokémon Moon. As with previous installments, the games follow the journey of a young Pokémon Trainer, taking place in the Alola region (based on Hawaii). Differences from Sun and Moon include an alternate storyline and new gameplay features, characters, Pokémon, and Pokémon forms, including new forms of the legendary Pokémon Necrozma as version mascots.