Dr. Nancy Jaax has one of the most dangerous jobs in the world handling deadly viruses; after a lab accident, she is faced with a possible Ebola outbreak on U.S. soil.

Dr. Nancy Jaax and her lab partner, Dr. Peter Jahrling, must take matters into their own hands to determine the source of the virus before it spreads; Dr. Jaax convinces an employee to hand over samples from infected monkeys.

A volatile situation inside the research facility comes to a head; Dr. Jaax steps up, but exhaustion threatens the precision needed to sterilize the threat; the press arrives, and neighbors become aware of the danger next door.