One gunshot, one death, one moment out of time that irrevocably links eight minds in disparate parts of the world, putting them in each other's lives, each other's secrets, and in terrible danger. Ordinary people suddenly reborn as "Sensates."

Crusade, a spin-off from the Emmy-winning Babylon 5, describes the efforts of the Interstellar Alliance vessel Excalibur to find the cure to a plague released on Earth. This plague of nano-viruses, released by the Shadow's servants the Drakh in retaliation for the Shadow War (see Babylon 5 movie a Call to Arms for details), will kill all mammalian life on Earth within five years if the cure is not found. Unfortunately, the plug was pulled on this series after just 13 episodes, so no resolution was ever achieved.

Babylon 5 is a five-mile long space station located in neutral space. Built by the Earth Alliance in the 2250s, it's goal is to maintain peace among the various alien races by providing a sanctuary where grievances and negotiations can be worked out among duly appointed ambassadors. A council made up of representatives from the five major space-faring civilizations - the Earth Alliance, Minbari Federation, Centauri Republic, Narn Regime, and Vorlon Empire - work with the League of Non-Aligned Worlds to keep interstellar relations under control. Aside from its diplomatic function, Babylon 5 also serves as a military post for Earth and a port of call for travelers, traders, businessmen, criminals, and Rangers.