Treerazer's plots for a swift win against the elven nation of Kyonin have been thwarted by the heroics of a band of adventurers. As they seek critical secrets from a mysterious voice calling from an planar realm, though, will a desperate acceleration of the demon lord's plans spell doom for the elves? Can the heroes stop him in time?

The Voice in the Blight is a Pathfinder adventure for four 18th-level characters. This adventure concludes the Spore War Adventure Path, a three-part campaign in which a group of adventurers aid the elves in a war against an army of demons. This adventure also includes an article that explores the regional ramifications of the Spore War, powerful new magic items to aid heroes against their foes, and several sinister new monsters.

Each Pathfinder Adventure Path volume contains an in-depth adventure scenario, stats for several new monsters, and support articles to give Game Masters additional material with which to expand their campaign.