A U.S. satellite crash-lands near a small town in Utah, unleashing a deadly plague that kills virtually everyone except two survivors, who may provide clues to immunizing the population. As the military attempts to quarantine the area, a team of highly specialized scientists is assembled to find a cure and stop the spread of the alien pathogen, code-named Andromeda.

Benjamin Brattas Dr. Jeremy Stone
Christa Milleras Dr. Angela Noyce
Eric McCormackas Jack Nash
Daniel Dae Kimas Dr. Tsi Chou
Viola Davisas Dr. Charlene Barton
Louis Ferreiraas Colonel Ferrus
Barry Flatmanas Charles 'Chuck' Beeter
Ricky Schroderas Major Bill Keane
Andre Braugheras General George Mancheck
Magda Apanowiczas Suzie Travis
Robert Schenkkan
Joel J. Richard