A good/bad story would be that Data's positronic brain survived the nanovirus as it was hardened against such intrusions...so now everyone wants to get their hands on the damn thing as it contains all the information they would need to find the lost cache of Starfleet ships and being Data it would be a full owner's manual for whatever ship they recover.
However before they can find the head, they have to complete a sort of epic quest, with each piece of the puzzle falling into place until they find it on a Pakled ship (hey they scrounge so much junk their ships are probably immune to the nanovirus from plain system incompatability everytime the virus mutates to beat one system, they find another system from a wholly incompatiable system and so on and so forth).
Arise, arise, Riders of Theoden!
Fell deed awake: fire and slaughter!
Spear shall be shaken, shields be splintered,
a sword-day, a red-day, ere the sun rises!
Ride now, ride now! Ride to Gondor!
Theoden King: The Return of the King