Foo Fighters / F.F.Jolyne and Ermes discover that the two of the search party members were killed and possessed by extensions of their opponent, a plankton colony called Foo Fighters aka "F.F.", who used the victims' remains to disguise itself. F.F. explains that it is both a Stand User and a Stand after Whitesnake granted it intelligence to guard the Stand discs for him. Jolyne chases F.F. into the nearby barn while Ermes attempts to prevent the Stand's double from dragging away the guard to trigger their bracelets. Ermes defeats the double by drawing it out of the water and exposing it to the dried-up corpse of one of the inmates which dehydrates it...