The curse is first mentioned when Sora, Donald, and Goofy tried to attack Hades to get him to stop sending enemies to Hercules to fight. When Sora asks Hercules if there is a way to fight Hades, Hercules mentions the stone. When Hercules goes up to Mount Olympus to retrieve it he returns saying it has been stolen by a man in a black coat who was aided by Nobodies . It is later revealed that Demyx had stolen it to free his powers from the curse of the Underworld. Sora, Donald, and Goofy defeat his water clones and force him back to The World That Never Was. Sora then picks up the left behind Olympus Stone and activates it. It creates a barrier of golden energy that repels the Underworld's curse.