The Sahauguin Baron who rules Nidhogg Isle holds a feast in the honor of the party. They meet Vicmorn Shieldheart's associate Hotspur the Wilden Druid from Summerspring. Also, one of the sword magi who was lost on an expedition to follow Nortumal's forces turns up. Triel the Genasi who trained and fought alongside the sword magi with Ilmak in the seige of Marshgate joins the party. Vicmorn bids the party farewell and returns to the surface.
The Baron gives the party his best ship, which is a small rowboat he stole from the Drow. They sail across the underdark ocean to the far shore toward the drow city of Erelhi-Cinlu. On the far shore they see a mindflayer interrogating Doomspider, the drow they met in the second session. The Mindflayer and it's two wererat minions ask the drow why they are amassing an army and what the nature of the red mist is. They suspect it's a plan to attack their city deeper below.
The mindflayer eats the drow's brain and the party decides to swim to shore and ambush them. Hotspur takes the form of a dolphin then a wolf once he gets to the beach. The remaining members wade through the shallow waters while Garrett and Garrick remain in the dingy. A battle ensues and a swarm of rats and a larger mindflayer comes to their aid. The party is victorious, and Ilmak personally finishes off both mindflayers. Hotspurs brain is eaten during the battle with the mindflayers and Garrett resurrects him while they set up camp.
Traveling along through the caves of fire, they reach a large room with lava pits. As they enter, goblins bound to lolth who bear her mark swing down from the ceiling. A hobgoblin priestess also appears at the far passage. The goblins shreik, casting lighting in a wide arc though the room and damaging the party. The hobgoblin uses her magical gauntlet and grasps Triel, hurling her into a lava pit. As Triel is burning to death in the lava pit, she teleports herself back out of the pit then expires in a charred mass, dead on the floor of the cave.
The party desperately casts the remaining goblins along with the priestess into the lava before they themselves are cast into it. They set up camp after the battle and Garrett begins the resurrection ritual to bring Triel back from the grave.
While they are halfway through the ritual, a pack of gnolls approaches. Brock challenges their leader and kills them, so the others follow Brock. He has the gnolls guard the passage while they rest. Once they have rested the Druid turns the party members into spiders and they crawl onto Brock's back. He leads the pack of gnolls to the city gates.
At the city gate they encounter a bloodspike behemoth who takes offense to the undead brock and begins attacking him. The troglodyte guards and gnoll followers stay out of the way. Brock chooses to turn into a bat and flees the scene. The guards calm the behemoth and go back to work while the gnolls return to the army camped out in front of the city's walls.
Brock becomes insubstantial and flies as a bat into the main hall that the red mist is spewing from. They enter a large hall filled with drow warriors, then pass through a grate downward into the temple of Lolth below.
They ambush the high priestess and brock assassinates her. She has a terminus amulet that tries to steal his life-force when he kills her, but it is unsuccessful because he is already undead (though it nearly kills him and severely weakens him). Garrick the Mad rushes down a staircase altar towards the mist and below finds a bunch of demon hybrids who follow him back up into the temple. The party fights the drow and spider guards along with the demons that rise up from the altar gate to the abyss.
After a long battle they are victorious, but they are now surrounded on all sides. They consult with ottian and he advises that the red mist is made by a giant machine in the abyss. Also the drow guards who could not enter the temple because no men are allowed in are gathering at the gates awaiting a priestess who can grant them permission to enter and slaughter the party. Two gates are found to other locations, among them the vault of veccna.
