He, later discovered that a group of powerful Daedra were plotting to wipe the island of Solstheim clean of life. And thus with the help of his magical powers he imprisoned these beings in a frozen cavern beneath Lake Fjalding to protect the island and its inhabitants. However, he also understood that, as a mortal, he would not be able to keep those dangerous beings at bay forever, and so, he decided to turn himself into an undead, to access immortality.
The Nerevarine may either kill or help him during this quest.
Aesliip is carrying the following items:
The following are all the dialogues that can be exchanged with Aesliip, some are dependent on the actions and choices of the Nerevarine:
"There is more to my story, mortal. It is time for you to either listen or die, for my work is not complete."
"Let us continue."
"It is done. My time is over. You have done a service here today. Both to me, and to the people of this island. Now I may rest. Before I go, take this. May you have the strength of will to continue your own journey."
Keep me from my task:
"Nothing must keep me from it."
"I have begun to tell you my story, and how I was cast out."
Was cast out:
"As I said, I was cast out of the Skaal village, and I learned of the plans the Daedra had to destroy my people."
Destroy my people:
"I realized that is what these Daedra would do, so I realized I must act."
"As I said, I tried to warn the Skaal, but they would not listen. I erected a barrier to keep the monsters at bay."
"As I said, I became this draugr. But there is a greater purpose."
Let us destroy these creatures together:
I am honor-bound to end your life:
"Yes. Let us now destroy these daedra."