From the introduction:
Welcome to The Drow War, Book One: The Gathering Storm!
This is a linked series of three 256 page books. Each one
contains a single epic story broken into ten parts, thus
making 30 discrete adventures in total, all tied in to one
The adventures are structured to take the characters
concerned from first level to thirtieth level. Each book
covers a span of ten levels, meaning that every adventure
will (if completed successfully) advance the characters
by approximately one level of experience. Naturally, this
outcome is not guaranteed, nor is the progress going to be
one long grind!
The story of the Drow War begins with a mysterious
summoning to a stone circle in the north of the island of
Chillhame, close to a fishing village that is about the most
unremarkable place on earth. As the Player Characters
explore their surroundings and learn more about why
they have been brought here, helping the local villagers
and finding out about ancient legends, they are abruptly
plunged into a burgeoning war. A long-exiled evil has
been brooding beneath Chillhame and now its armies seek
to march on the surface.