A deadly airborne virus finds its way into the USA and starts killing off people at an epidemic rate. Col Sam Daniels' job is to stop the virus spreading from a small town, which must be quarantined, and to prevent an over reaction by the White House.

A young female doctor discovers something sinister going on in her hospital. Relatively healthy patients are having 'complications' during simple operations and ending up in comas. The patients are then shipped off to an institute that looks after them. The young doctor suspects there is more to this than meets the eye.

Carol, a typical upper middle-class housewife, begins to complain of vague symptoms of illness. She "doesn't feel right," has unexplained headaches, congestion, a dry cough, nosebleeds, vomiting, and trouble breathing. Her family doctor treats her concerns dismissively and suggests a psychiatrist. Eventually, an allergist tells her tha...

Plagued by a series of apocalyptic visions, a young husband and father questions whether to shelter his family from a coming storm, or from himself.