The adventurers leave Moonstair to aid the people of The Seven Pillared Hall. Using a linked portal, Commissar transports the group to meet with the mages of Saruun. Apparently, Orontor has gone missing during a recent trade mission with the drow outpost of Phaervorul. His last messages indicate that the city had been overrun by a sect of Orcus worshipping drow.
Tasked with a new mission, the adventurers set out to find the missing mage, and to learn what has befallen the drow outpost.
During their journey they encounter an Eye of Flame with Magmen servitors and later some Illithids accompanied by their minotaur thralls.