From the introduction:
A One-Round d20 LIVING ARCANIS Introductory Adventure
Version 1.0 (GenCon SoCal Premiere)
A Nawal of the Yhing Hir calls upon a group of travelers to retrieve the body of his dead son from a place where no Horseman may ride.
This is an INTRODUCTORY LIVING ARCANIS adventure, designed for 1st and 2nd level characters (APL 1 and 2). Characters not within this level range may not be played in this scenario.