"Serpent Moon" is a series of four linked adventures set in the United States. The player characters must uncover the plans of the Templars before they permanently damage the fabric of the elemental realm. But first they must face down the Hurdy Gurdy man, a malevolent visitor from another dimension; avoid capture by a secret society as they attempt to unravel the secret of a mysterious stele from the time of Akhenaton; and, finally, form a temporary alliance with an evil Black Star sorcerer in order to defeat the machinations of the Templars.