I think you can do the introductory post, but I can help with the background.

The theme might be that you received a letter or so from Sharon a couple of days/weeks ago, and came to offer your aid in Stormwind. The meeting place could be his mansion.

It's currently winter in Stormwind, so the weather is snowy, lots of ice, and... did I mention more snow?
Sharon's mansion lies in the Mage District, quite a big house with a large snow covered garden surrounded by a stone wall and fenced gate. Oh, and it's guarded by Rithry's Night Elves, so be aware.(1's visible at the gate I believe, the rest hiding around & on the roof)

If you have any other questions, it's just to ask ;)