Episode 1: Arrival
Lt. Col. Nancy Jaax is a wife and mother of two, with one of the most dangerous jobs in the world.
Every day, she dons layers of protective gear and enters the Biosafety Level 4 lab at USAMRIID, where she handles the world's deadliest viruses.
One day in 1989, upon arriving at work, she tests a sample and fears it may be in the deadliest category of viruses, known as filoviruses.
Even more unnerving is the location it came from — a monkey research facility 30 kilometres from the nation's capital.
When a breach in the lab causes the samples to be lost, it is Jaax' instincts against the world.
Episode 2: Cell H
Lt. Col. Nancy Jaax must take matters into her own, capable hands. She convinces an employee at the Hazleton research facility to hand over more samples from the infected monkeys.
Back in the USAMRIID lab, she and her overly confident partner, Dr. Peter Jahrling, test the new specimens and come face to face with the virus through their microscope.
Jaax is determined to figure out the source of the virus. She brings in her mentor, reclusive Ebola expert Dr. Wade Carter.
Episode 3: Charlie Foxtrot
When representatives from varying agencies disagree on how to handle Nancy Jaax's discovery, she quickly realises there are few protocols in place for containing a deadly virus on US soil.
An employee at the monkey research facility falls ill, causing Jaax to fear the virus has spread to the human population.
Travis Rhodes, from the Center for Disease Control, arrives with a different way of handling matters.
As Jaax battles the obstacles on the ground, viewers find out Carter and Rhodes were among the first responders to discover Ebola in Africa decades earlier.
Episode 4: Expendable
Nancy Jaax begins to lead a team from USAMRIID to prepare for the most dangerous mission any of them have ever faced.
With full access to the research facility, the life-threatening stakes cause great concern in the Jaax family home. Her husband, Jerry, searches for a way to protect his wife.
Meanwhile, Jaax believes her mentor, Dr. Wade Carter, may have a different agenda. His obsession with exposing the dangers of Ebola is driving him to make questionable decisions.
The team of animal care specialists at USAMRIID, led by Jerry, heads out to eradicate the virus at the facility, while more employees are tested for possible exposure.
Episode 5: Quarantine
Inside the primate research facility, unforeseen dangers arise. Nancy Jaax works tirelessly in Biosafety Level 4 to find out why the virus is behaving differently in human victims than expected.
With the daunting task of euthanising monkeys, unforeseen dangers arise, and even the strongest of the team are pushed to the brink.
The families of the employees are quietly gathered to protect others from possible exposure, and Jaax is forced to make an impossible choice between her family and her duty to her country.
Episode 6: Hidden
An already volatile situation inside the infected research facility boils to a head. With Nancy Jaax stepping up while those around her fall, exhaustion threatens the precision needed to sterilise the threat.
Their efforts to contain panic are threatened when the press arrives and neighbours become aware of the danger next door.
Jaax is forced to confront her mentor, Dr. Wade Carter, when a situation spills out of the monkey facility and puts people on the outside in danger.
Jaax ultimately must face the ramifications of trying to balance her dangerous career and her loving family.
Longtime rivals Dr. Carter and Travis Rhodes reach an impasse that could determine how many more people outside the lab have been exposed.