Ash and co. finally arrive at Red Rock Isle, home of the Whirl Cup. There they meet a boy named Marcellus who wants Ash to battle his Remoraid, but Misty steps in to battle Remoraid instead. After the battle, Remoraid evolves into Octillery. After the first found of the Whirl Cup, They see Marcellus again, who says his other Remoraid hate Octillery. What can Ash do to change their minds?