Speak with Jennea Cannon in Stormwind.
We mages have a task that needs doing. One that is vital to the safety of Stormwind and Elwynn forest.
Jennea Cannon has the details. She studies in the wizard's sanctum, in the mage district of Stormwind. You should make your way to her with haste.
You have been sent to aid me in my task, <name>? Good. It is heartening to see young mages eager to help in our cause...
What cause, you ask? In time, young one. You shall know... in time.