“Totaled Recall” is episode seventeen of season five of Andromeda.
Dylan and Harper are working on an exotic matter generator when something goes wrong and Dylan gets a very dangerous substance on him. Then things get rather weird (like they’ve been normal this season).
Dylan is swapping between times and universes, in the past and the future, without any idea as to which is real and which is a hallucination. Or if any of them are real. Interspersed are what appear to be the others trying to save him after the accident. The only constant thing seems to be a man calling himself Elysian, who seems to be present in most of them.
A very confusing episode for much of it, but then it’s supposed to be confusing, as it is for Dylan himself, at least until what is going on is explained.