N and the heroine Kallen accidentally came to a legendary continent in Isu - the continent of Karteles, and transformed into two Pokémon, and were finally saved.
Faced with the dangers and challenges that came one after another, Kallen and N worked together to solve them again and again, but they did not know their mission to come to the continent of Karteles. When they learned about their mission, the two held each other's hands and walked towards a rough and arduous journey.