Ash and Goh are headed to Stow-on-Side in the Galar region, but when it’s time to transfer, they accidentally board the Ghost Train! While on board, they encounter an eerie stone that seems to have an odd effect on Ash—now he won’t stop picking on Goh. They eventually meet a boy wearing a mask, and he says Ash has been possessed by an ill-natured spirit belonging to a Spiritomb. With the boy’s help, the spirit leaves Ash’s body, and Gengar manages to grab it and return it to Spiritomb.