You were living a normal life in Alola with your friends Ash, Mallow, Sophocles, Kiawe, Lillie, Ilima, Hau, Acerola, and Lana and your teachers Professor Kukui and Professor Burnet. Your rivals was team skull and Gladion. One day an Ultra beast known as Guzzlord attacked Alola, separated you from everyone you knew, killed most people, and turned Alola into a deserted region. Over time you learned how to use military weapons and trained your Pokémon hard so you could defeat Guzzlord. You changed your personality because you thought everyone you cared for died (they didn't).
A couple months after Guzzlord came you were eating instant Ramen when someone came to your place.
Ilima: Is anyone here? Acerola: We want to know if there's food Hau: And we're looking for survivors