What's my counter mission, as Sydney Bristow would ask?

Yuletide! My actual assignment is a first for me: the person I was matched with only gave the fandom. Not any particular characters or prompts, and there is no Yuletide letter, either. So I guess this means any story within this fandom will do? Don't get me wrong, I can work with that. I love the source material, after all. It's just that in none of the ficathons I ever participated in did the recipient not even give the slightest hint about what type of story or subject within the fandom they want. Okay, not to self: freshen up knowledge of source material with a lookout for possible plots!

....Meanwhile, of course I read a lot of prompts in other people's letters from the last months and ended up writing a twenty pages saga as a treat for someone, currently off to be beta'd by a generous soul. That was fun, too.:)