A Dariaverse crossover fanfic (the second known in the fandom but the first to be entirely devoted to the concept), written by Brian Taylor and first posted, the author is reasonably sure, in November 2000. The story is in script.
Daria and Jane pass through an interdimensional gateway inside of Trent's closet and emerge in an "evil" alternate universe. As the story's title implies, slash lies ahead. One of the earliest and most twisted of AU tales in this fandom.