Blake tries to buy the services of the Terra Nostra organized crime syndicate in his struggle against the Federation. When his first effort fails, he decides to go after their biggest source of profit to gain leverage. That source is an illicit narcotic called shadow.
After a researcher named Coser kills his superiors at the Federation's weapons development base, he escapes to a deserted planet with a new secret weapon called IMIPAK. Soon, both the Liberator's crew and Servalan are searching for him.