My epic mess of a fan fiction is in a very obscure fandom as well, so I can sympathize entirely. I have one fan fiction set in the Dragon Age: Origins world, which some gamers know, but no one remembers Neverwinter Nights 2, let alone the Forgotten Realms lore that my geeky little heart adores.
And I write the worst summaries known to mankind. I'm beginning to take pride in how awful they are.