I'm looking for a story that was set in season one during the episode "The Benders." It was a crossover with the X-Men, and Storm, Logan, and Scott were trying to find the Winchesters. They thought Dean was a mutant, and a killer, and that he'd been the one to murder Jessica and then kidnap his brother Sam. They planned on killing Dean and taking Sam back to the school with them, but then Scott and Sam both get taken by the Benders.

It was multichaptered, but I don't know if it was ever finished.


Edit to post:

Found!