You need access to the Chaos Descending expansion to do this quest.
You need to have unlocked the access to the overland zones accessible from Myrist. This is done by having one character at level 110 adventure or tradeskill and opening the mail Assistance Request: Ghida Borrell (tradeskill) or Official Summons of Justice (adventure). Accepting this mail/completing the quest will unlock Myrist for the account.
You need to be at least level 100 to enter Myrist, the Great Library but you cannot enter the overland zones unless you are a level 110 adventurer or crafter.
Starting the Quest[]
The starting zone seems to be random, however always near a spire, i.e. Teren's Grasp Spire, Moors of Ykesha Spire, Stonebrunt Highlands Spire.
The guide is not always there.
The quest is offered to the whole group, but it can't be shared.
You only need the guide to start the quest, there is no time limit to finish the quest.
Steps[]
Go to the Myrist Myrist Main Stacks for a location update ( 131, -5, -14 ) Copy/waypoint 131.49, -5.26, -13.53.
Go upstairs using the lift by ( 420, -5, -13 ) Copy/waypoint 420.06, -4.96, -13.35, then head to the South Wing Catalog by ( 350, 15, 170 ) Copy/waypoint 350.41, 15.22, 169.65.
Use the teleport pad to your left (( 332, 16, 174 ) Copy/waypoint 332.27, 15.71, 173.70) to enter the Crafters' Gallery.
Head back to the entrance then left for the Myrist Conservatory near ( 47, -20, -73 ) Copy/waypoint 46.93, -20.10, -72.77