From the ICON Convention Adventure booklet description:
The Last Heroes of a war-ravaged Outer Plane have been quested to bring together the Greatest Heroes of the World to finally declare a truce between the factions. The Players have several problems facing them, mostly that all of their most famous, most competent Heroes have in fact been slain in the course of the War. The PC’s must travel to the Plane of Concordant Opposition and seek the shades of the slain Heroes and bring them back to the World of Ragnar.
The PC’s must uncover the location of these Heroes from the Mummer’s Faire or its Agents… and return these shades to the World of Ragnar so they can begin to negotiate the Peace that will save the World. Naturally all is not as it seems because the Powers that be in Ragnar have not told the PC’s the full story.
A D20 System Tournament Module for 4 Experienced Role-Players for Characters of TCL 14-16