This 5-part Chain Quest, starts when you meet Migolo Fernal near the Griffinborough portal.
The five quests in this chain are:
Talk to Migolo Fernal to start this 5-part chain quest. The detailed information on this string of quests starts here.
There is another quest called The Clerk's Plan located near Crag Rock. That quest is not related to either of the quests of the same name in this chain quest.