Quite a bit went on. Valas and Danifae went to a drow city to get supplies, during which time Danifae got her battle-captive status finally removed. She immediately started to plan revenge on Hallistra, the first move of which was that she sent Jeggred to kill Ryld while she (Danifae) kept Hallistra distracted.
Gromph managed to fix his eyes by digging a new pair out of someone else's head and replacing his own with them.
After an annoyingly long time, Pharaun, Quenthel, Valas, Jeggred, and Danifae manage to pilot the Ship of Chaos to the Plain of Infinite Portals on the abyss with the alu-fiend Aliisza in tow. Aliisza pretends to abandon the group as they get to the Abyss, but instead secretly follows them as they make their way to the sixty-sixth layer, the Demonweb Pits.
There, they find that the entire Demonweb has been reduced to a blasted ruin, as though a great battle took place. Pharaun identifies that the damage seen there is over a millenia old, which makes no sense since the group was there just a few tendays past and everything was fine.
Hallistra, still carrying the holy Crescent Blade but stricken with grief over the death of Ryld, journeys to the Astral Plane with two other priestess of Eilistraee, and find the souls of dead drow gathering there. A new portal has opened, and Hallistra and company are shocked to find that it leads to the Demonweb Pits, but not to the Abyss. Somehow, the Demonweb has become its own plane. She meets Ryld's soul and says her goodbyes. After overcoming a minor crisis of faith, she and her companions head to the new Demonweb on their mission: to kill Lolth
Aliisza chooses to abandon Pharaun's expedition when it seems they'll find nothing, and also sees the Astral Portal, and reports it back to her lover, the cambion Kaanyr Vhok, who is still engaged in the siege of Menzoberranzen with the duergur of Gracklstugh and the covert forces of the Jaezred Chaulssin.
Gromph challenges the lich Dyrr to a spell battle. The two fight, and after a brief interlude where Gromph gets sent to Green Fields (halfling heaven) the battle moves into the marketplace. Nimor of the Jaezred Chaulssin, showing his true half-drow half-shadow dragon self, joins the battle, and things go badly for Gromph. However, Nimor receiving a sending from Vhok that Lolth has apparently returned, since the new Demonweb has appeared. Nimor immediately quits the fight, as do Vhok and his forces.
Journeying to the heart of the sixty-sixth layer of the Abyss, the priestesses are suddenly overcome, collapsing. It takes Pharaun just a moment to realize that their apparent seizures are actually their connection to their goddess being restored.
The Silence has ended.
Back in Menzberranzen, things are still going badly for Gromph. Dyrr has shapechanged (at least, I think it was a shapechange spell) into a blackstone gigant, and Gromph is hit by it's tail, petrifying him. However, Triel, Gromph's sister and Matron Mother of First House Baenre (and thus the leader of all Menzoberranzen) and all the other clerics are enraptured to feel Lolth return. Triel immediately takes to the field, and uses a miracle spell to undo Dyrr's shapechange, as well as undo all of the petrifications he caused. She then leaves the battle, and Dyrr's body is destroyed when Gromph breaks the staff of power that he (Gromph) had brought with him. However, he knows Dyrr isn't permanently destroyed, since his phylactery is still out there.
Nimor reports back to the Jaezred Chaulssin in failure, in the ruins of Ched Nasad. His superiors chastise him for his failure, saying that they never expected Lolth to be gone permanently, or to take Menzoberranzen; they allowed Nimor to try simply because they thought he might surprise them. He didn't, and is demoted in rank as a result.
Back in the sixty-sixth layer of the Abyss, servants of Lolth meet Pharaun and company at the heart of Lolth's old domain, greeting them and inviting them through a portal to Lolth's new realm. Quenthel is Lolth's Chosen One, and she (and the others) are invited to the new Demonweb to "face Lolth and speed her into her new form".
There it ends.