NorBAC has been taken over by a joint command to deal with a catastrophic smallpox scenario. Bob (Dmitry Chepovetsky) tries to find a cure for his dog that is suffering from histiocytosis. Jill (Sarah Strange) comes clean with David (Peter Outerbridge) about taking medication for her panic attacks. David discovers that the earlier "Miranda Virus" outbreak might be linked to the U.S. government's secret bio-chemical lab and that whoever manufactured the "Miranda Virus" may possess another, even more lethal, biological weapon.