Swanna Song, Sung Throughout Sinnoh

Pokemon Trainer Gary (no relation to Gary Oak), has lost a lot on his journey through the Kanto region, Pokemon and humans. He's decided to travel to the Sinnoh region to possibly get some answers. But the terrible, unidentifiable monster that had been terrorizing him previously, has been seen in Sinnoh, too. And this time she has a goal that could spell doom for the entire planet.