Elves play pipes while the goblins sing

[cyrano]

For those creative lot among you....
Players in my 7th Sea game are being sent on a quest to allow them to enter the Summer Country, home of the fairies and piskies.
I'm looking for an appropriate quest, and turn to those of you who are not in my game and perhaps have a mean streak in you to offer me suggestions.
My two main qualifications:
It should sound like something you would encounter in a fairy tale of some stripe.
If it would benefit a pragmatic, somewhat otherworldly Scottish family who is setting the quest, that would be especially good.
My players are warned--clicking on comments may reveal spoilers.

Comments

[cyranocyrano.livejournal.com]

Okay, here's a slightly expanded tale/tail.
The MacLeods as a family are on pretty good terms with the Fae and can get to the Summer Country already.
Our hapless party wants the MacLeods to let them in. They are going to be sent on a quest to 'prove their worth'.