We're going back to 5202, when the World encountered the beginning of warlockry. One night, called 'Night of Maddness', many people were given magical abilities, and the other were trying to restore order in the chaos it made.
About 'Night of Madness' on author's website
http://www.ethshar.com/nightofmadness.html
The Misenchanted Page by Lawrence Watt-Evans
Official author's website, designed by himself, containing information about all his books and a lot, really a lot of other interesting stuff.
http://www.watt-evans.com/
Ethshar Official Website
Website dedicated to Ethshar series, designed by author himself. Here you can find a lot of information about all books, and also the latest parts, written as online serials.
http://www.ethshar.com/
Background information about Ethshar
On this page, author himself describes such details, like clothing, customs, religion and cosmology, geography, history and political situation in the world of Ethshar
http://www.ethshar.com/background.html