Heres a story. I added both You's and Goldiop's, with some of mine.
Ash and friends are on their way to the Hoenn National Leage, on their way, horrible stuff happens. Huricanes start blowing, floods are raging, fires are loose. Ash and co. decide to go to Kanto until the disasters stop. Little do they know, they natural disasters are happening all over the world. On their way back to Kanto, a flood rages near Lillycove City. Ash and gang get separated, along with Pikachu, and Ash's pokemon. Ash passes out. The flood has ended, Lilycove City is half gone. Ash has waken up and finds himself riding on a Nidoking, with a Gengar on the side. Ash gets Startled and says, "You're the poeple from the Kanto Championships!". One of the guys say," Yeah, thats right. We saw you riding on a wierd looking Latios(ash has flashback when latios died).
Thats all I have, i'll wait for more IDea's to ad.