All Seeing Eye
Admiral
Something happens to a member of a Federation ship and his soul or essence keeps jumping into other people bodies not only through space but also through time.
We get to see this guy jump all across the Galaxy and through different centuries and eras trying to find a way to return to his own body.
He becomes all sorts of different people from Klingons to Romulans, to Jem'hadar to pakleds to Cardassians etc etc
Best of all he ends up in the future and witnesses the rise of an major enemy to the Federation and has to find a way to alert Starfleet. At one point he ends up so far back in time he becomes an Iconian during the time of their downfall.
We get to see this guy jump all across the Galaxy and through different centuries and eras trying to find a way to return to his own body.
He becomes all sorts of different people from Klingons to Romulans, to Jem'hadar to pakleds to Cardassians etc etc
Best of all he ends up in the future and witnesses the rise of an major enemy to the Federation and has to find a way to alert Starfleet. At one point he ends up so far back in time he becomes an Iconian during the time of their downfall.