Shade of Dule tells you, "Human! You can help end my bizarre imprisonment here by that unjumped bag of air Aerbax. Some half-formed shade of the Hopeslayer himself awaits in the chambers below! An agent of Aerbax, a creature known as the Thief of Dreams, has taken the skull of Avoren Palacost, and seeks to destroy humanity's accomplishment in defeating Bael'Zharon! You must act quickly, and stop the Thief of Dreams from coming through here with the skull! Take the skull from him and bring it to me, and I shall open the way for you and your comrades to assault the shade of the Hopeslayer..."