The Babylon 5 saga continues... In the late 23rd century, humanity defeats the evil Shadow race. But its allies remain--and they swear revenge. When the mysterious, hateful Drakh unleash a deadly biogenetic plague on Earth, mankind faces its demise within five years unless the Rangers--an elite army of light forged during civilization's darkest hours--can find a cure. Now, in a ceaseless battle against time and the dangers of deep space, the Rangers boldly pursue their mission: to destroy the Drakh and their alien allies. Diplomacy and negotiation mean nothing. With 7 billion lives at stake, action and courage against insurmountable odds must prevail in this Crusade.