The
Imperial prison barge
Purge breaks down in a distant, uninhabited part of space. Its only hope appears to lie with the
Star Destroyer Vector, drifting nearby, derelict and seemingly abandoned. When a boarding party from the
Purge is sent to scavenge for parts, only half of them come back, bringing with them a contagion so lethal that within hours, almost all aboard the
Purge are dead – the half-dozen survivors include two teenage brothers, Kale and Trig Longo, the ruthless captain of the guards, Jareth Sartoris, and chief medical officer, Zahara Cody, all of whom seem to possess natural immunity. The ''Purge's
onboard computer informs Cody that there are also two survivors in isolation, and Cody leaves the medibay to release them and administer an antidote synthesized from her blood by the incumbent 21B medical droid "Waste". The isolated prisoners are Han Solo and Chewbacca who initially are skeptical of the situation, but allow her to immunize them, and make their way back to medical. Upon returning to medical they find it empty, and Waste destroyed. The dead have become undead and begin to hunt the survivors who are forced to abandon Purge
and take shelter in the Vector'', unaware that the Destroyer is not the better place to be. All the survivors are separated: Sartoris faces the few living survivors who have become cannibalistic, and are hiding in an Imperial Assault shuttle previously captured by the
Vector tractor beam. Solo and Chewbacca make their way to the bridge in an attempt to either fly the
Vector, or at least turn off the tractor beam. Kale dies from an infected wound, returns to life as a zombie, and is subsequently killed again by Trig. Cody finds herself in the
Vector medbay, and with the aid of the Destroyer's own 21B discovers the cause of the contagion: Codenamed
Blackwing, it is an artificially created virus – intended to slow the onset of decay and
rigor mortis, and increase the healing capacity of the human body prior to death. The
Vector was taking it to an isolated outpost for testing. However, the contagion – characterised by a
grey goo – leaked from its containers and infected the ship, converting its 8,000 crew into the undead. Cody observes from her vantage point that the remaining ships in the docking bay are being filled with the zombies, who are attempting to leave the
Vector and spread their contagion throughout the galaxy. After escaping from the shuttle, Sartoris meets up with Solo, Chewbacca and Trig, then sacrifices himself to allow them to escape, after revealing he has been bitten by an undead and is himself turning into a zombie. They return to the shuttle and successfully leave the
Vector, but discover that a zombie has made it aboard the shuttle and killed the two remaining original survivors. The zombie is shot by Cody – who they had previously thought killed when the shuttle ready room she was hiding in was destroyed by the zombies – and she points out that the rest of the escaped ships are no longer controlled, as they watch two infested
TIE fighters collide with each other and explode. Cody theorises that Blackwing is only effective when in range of the original contagion source on the Destroyer, and that now removed from the source the zombies have again "died". The four survivors leave the
Vector and the now-derelict ships, and find a planet where they sell the shuttle to a pirate group. Solo and Chewbacca leave to re-buy
their impounded ship, while Cody and Trig use their share of the sale to visit a distant planet – home to one of the dead prison guards, and deliver a note he was in the process of writing when Blackwing took him. ==Reception==