This is the home of the ‘Steel Souls’ campaign. Steel Souls is set in Eberron and is being played with D&D 4e rules.
“Here underneath the towering city of Sharn you continue the thankless task that has consumed the last several weeks of your life. You have scoured the basements, the sewers, and the catacombs of this ancient metropolis in the name of the Silver Flame for a scroll case containing maps. Maps of what? That isn’t any of your concern, what you do know is that you and your partners were hand picked by Cardinal Harvon Uthmondor the personal adviser to Jaela Daran, Keeper of the Flame. You know this quest is a privilege and an honor, but at the present time you fail to find comfort in that fact.”