You and your friends were with all your Pokémon in a very high class hotel. The ones you brought were, Dixon, Dixie (A male and female Indeedee respectively) Annabelle, (A female Banette and the second youngest) Martha, (A female Mimikyu and the youngest of the group) and Charlie. (A female Galarian Corsola). You all went into one of the rooms and saw an old book with demonic symbols on it. It was called the Book of Spirits. You opened it, summoning a random ghost. The game is just starting.