Agent of the Devil's Isle Nikia asks you to meet Pirate Spirit and listen to his story.
2.
Make a deal with the ghost
Pirate Spirit complains about the ill fate and asks you to collect the remains scattered all over the island. If you help him, he will share useful knowledge with you. Return to Agent of the Devil's Isle Nikia, tell her, what you know, and discuss the assignment.
3.
Grant the dead man's last wish
Agent of the Devil's Isle Nikia disguised you so that you could safely reach the isle's center and collect Pirate Ghost's remains. Get down to work now.
4.
Return to Pirate Spirit
You have collected everything that Pirate Spirit had asked for. Return and find him at the entrance to the Devil's Isle.
Pirate Spirit complains about the ill fate and asks you to collect the remains scattered all over the island. If you help him, he will share useful knowledge with you. Return to Nikia, share what you know, and discuss the assignment.
Nikia disguised you so that you could safely reach the isle's center and collect Pirate Ghost's remains. Get down to work now.
Warning! Nikia won't be able to dusguise your character if there's a servitor summoned. Release the servitor so Nikia could cast disguise upon you. You need to get Spiteful Soul Skull, Spiteful Soul Rib Bone, Spiteful Soul Arm Bone, Spiteful Soul Thigh Bone.
You have collected everything that Pirate Spirit had asked for. Return and find him at the entrance to the Devil's Isle, get the reward and the access to the next quest, The dark side of power.