We have already learned that Pokémon Ultra Sun and Ultra Moon is a retelling of Sun and Moon with new plot points and events, altering the main storyline. In a new trailer, we get to see hints of exactly how different it is. The over one minute video sets the stage for the situation, allowing us to see familiar faces in new ways.
This Pokémon Ultra Sun and Ultra Moon trailer begins with Professor Kukui telling the player and Lillie about a past incident where darkness covered Alola and both humans and Pokémon needed to come together to get rid of it. We then learn that Necrozma is the one who can steal light and bring darkness from Phyco. From there, we get to learn more about Necrozma, his impact on the story, and the Ultra Wormhole.
Pokémon Ultra Sun & Ultra Moon will come to the Nintendo 3DS on November 17, 2017.