Lt. Col. Nancy Jaax is a wife and mother of two with one of the most dangerous jobs in the world, handling the world's deadliest viruses. In 1989, she tests a sample and fears it may be in the deadliest category of viruses.

When varying agencies disagree on how to handle Nancy Jaax's discovery, she quickly realizes there are few protocols in place for containing a deadly virus on U.S. soil, as an employee at the monkey research facility falls ill.