au where bill gets reincarnated into a bill and ford swap universe and rverything stays the same except for that. Bill has his memory wiped but he wakes up in a clearing not far from what will later be the shack, about a year or two away from the betrayal. his memories are replaced with what would be ford's just with him in place of the guy

he continues his work continues to work with his muse while navigating this body he strangely no longer fully understands how to operate. Timeline continues as normal until stan reopens the portal

the whole point is the axolotl wanting him to see how ford mustve felt during the entire time. his memories are restored eventually, but sometimes the universe glitches as if it's not meant to exist and bill experiences intense and vivid yet vague nightmares of his pervious life