In the depths of space, on the twentieth anniversary of the supernova that destroyed the Earth, the Space Star Silver Streak comes across an ancient space probe containing the infamous warlord of World War III, Diana Krotus, who has been discovered by Captain Cameron's old enemy Joshua Caruso. When Krotus is revived, she turns out to be a more complex person than the supervillain of history.

But Caruso still plots revenge against Cameron, and Krotus has her own reasons to take over the Silver Streak. The ensuing plot sows discord among the Silver Streak's command crew, sunders lifelong friendships, and pits the command section against the civilian section, as the distant past intrudes into the present.