From publisher blurb:
Seventy years ago, the sorcerers Axiom and Enigma crafted a powerful scrying chamber. While studying the cosmos through this unrivaled observatory, they unintentionally made contact with a terrible alien race called the Merdrun. Under the influence of these conquerors, they crafted a magical artifact known as the Summonstone, and placed it atop Touchstone Peak.
Since then, the Summonstone has slowly siphoned the magical energies of the lands, and as that energy flows to the Summonstone, it is possible for some to tap it. It is close to being fully charged. When ready, it will open a portal to the great void through which the Merdrun will travel in all their terrible glory to conquer the world. As it grows in strength, a portion of its power flows into the word, corrupting and twisting the land about it. Will a band of heroes rise to save the world?
The Structure
Written by scientist and best-selling author Ian Irvine, this adventure module is system-agnostic. You can use it with your game system of choice. You will need to create stats for the characters and monsters at an appropriate level for your players.
There is a linear central plot line, experienced by visiting a variety of unique locations and running specific adventures. The remaining points of interest and adventures can show up anywhere in your world you wish, and add to the narrative flavor and depth of this module. Also included are a list of rumors – some true, some not so true – that your NPCs can relate to the players.