The Underdark | Adalon's Lair | Ust Natha | The Beholder Dungeon | The Mind Flayer Dungeon | The Kuo-Toa Dungeon | The Exit Area
OVERVIEW OF CHAPTER 5
As you adjust to the dim light, the reality of where you are begins to sink in...
Having followed Irenicus and Bodhi into the underground, Chapter 5 begins with your party finding themselves in the Underdark. Aside from chasing your two enemies, you should also consider finding a way out of this place and back to the surface.
The cutscene at the beginning of the chapter tells you that Irenicus and Bodhi have made some sort of deal with the Drow Elves and started a war with the surface Elves. You can learn from the nearby Svirfneblin traders that they have entered the Drow city of Ust Natha. Now, how do you get in there, when only Drow are allowed into their own city?
What happens in Chapter 5?
You can complete Chapter 5 pretty fast. Just enter the Kuo-Toa Dungeon from the main Underdark area and fight your way to the exit. But that's a bit easy and you miss out on roughly half a million XP per party member, not to mention a plethora of items. So here is my recommended procedure:
First, seek out the Svirfneblin settlement in the northwestern part of the main Underdark area. Their leader will ask you to do them a little favor: They have delved too deep and released a terrifying creature (did I hear someone mutter about the Balrog of Moria?) and would like you to dispose of that creature for them. In return for delivering them from the Balor, they refer you to a creature called "Adalon" who can help you enter the city of Ust Natha.
Adalon turns out to be a Silver Dragon! And she has a problem: She is supposed to guard the entrance to Ust Natha and protect the peace between the Elves and the Drow. But Irenicus has stolen her eggs and they are being kept hostage inside Ust Natha. She wants you to save her eggs.
Adalon casts a spell on your party, making you appear as Drow Elves. In this guise you can enter Ust Natha and try to rescue the missing eggs.
Once inside the city, you get to solve a number of quests for the Drow, and you can also take on a few side quests. In the end, you are able to save Adalon's eggs and bring them out to her again.
When you have saved her eggs, Adalon rewards you with a powerful item from her hoard, and she also helps you clear the path out of the Underdark. At this point, you should take the opportunity to clear out the Kuo-Toa Dungeon.