Daughter of Giants

And is part of the main quest.

Walkthrough
The Soulless One is contacted by the Prophet to meet him in the Harborage to save Lyris Titanborn from Coldharbour. Once the Soulless One is in the Harborage, he will have a dialogue with the Prophet where after he finishes conversing with the player, will open a portal to the Foundry of Woe, which is located in Coldharbour and is where Lyris Titanborn currently trapped in.