Having just discovered a new virus that could drive man to extinction, a young doctor begins a video journal to track her progress in preventing a global pandemic.

Dr. Scott outlines her theory on how global warming might have exposed the modern world to an ancient virus to which we have no natural immunity.

Dr. Scott pleads with her government benefactors for a ship to take her to the arctic so she can trace the deadly virus to its possible source.

Despite ridicule from her fellow scientists, Dr. Scott's concern over the new virus is amplified by the discovery of three new cases outside the original hot zone.

Dr. Scott shares her research with someone close to her - along with a plea to avoid populated areas - as she prepares to chase down a cure for the rapidly spreading virus.

About to board the USS Nathan James, Dr. Rachel Scott imparts a final note of urgency about the threat that mankind faces, revealing that the fate of humanity hangs on the success of her mission.

CNO Tom Chandler is sent to Asia to investigate a possible mutation of the Red Flu. Captain Slattery and his crew deliver cure to Southeast Asia but there may be an unexpected threat in the region.

Chandler must find a way to return to his old crew and investigate a dangerous new foe.

Chandler and crew race to find answers in an Asian Dodge City. Slattery begins to unravel the truth about his troubling predicament.

Chandler must confront his suspected new foe. Slattery learns more about the supposed virus mutation. Pressure mounts on President Michener as the situation worsens.

Chandler's mission becomes complicated as his position is worsened. President Michener faces pressure from the regional leaders.

Chandler's mission comes to a head as he prepares the final part of his plan. President Michener ponders the fate of his presidency.

The Nathan James must evade an overwhelming threat. A revelation in St. Louis puts President Michener in a terrible position.

America copes with tragedy while Chandler further investigates the possible virus mutation.

Chandler gets a lead that could help answer threatening questions. Kara does some digging in the White House.

Chandler finds himself making a difficult decision when an order comes in from the White House.

Chandler faces his powerful enemy in a final showdown. Kara joins someone that can help with her mission.

Chandler returns to America to find out what has really been happening.

The fight for America comes to an end; Chandler faces a challenge that could change his life forever.

Sixteen months after thwarting the coup in America, Nathan James must face yet another global disaster. The question remains, where in the world is Tom Chandler?

Having lost their only lead, the crew of Nathan James continues their search for an item that could save the world. Chandler immerses himself in a mission for revenge.

Nathan James's crew searches for a precious item leading them to a strange place of opulence and violence where they cross paths with a most unexpected ally.

The crew searches for one of their own as enemies close in on all sides. Slattery is haunted by visions of the past.

Nathan James is diverted from their mission when they receive a suspicious distress call from a fishing trawler.

With an enormous storm on the horizon, Nathan James must navigate an equally terrifying threat in order to make it to safety.

The search continues with a reconnaissance mission but things turn violent when an old foe resurfaces.

An undercover mission in the land of the dead leads to disturbing revelations about Dr. Vellek's sinister plans.

The crew of Nathan James faces a threat that will test the limits of their Naval tactics and strategies.

Chandler confronts his enemy — and his personal demons — in a final showdown, with the fate of humanity on the line.

Three years after overcoming the global famine, the United States Navy is ready to unveil its first fully functional fleet since the Red Flu pandemic, but a new type of threat may mean the next world war.

Thrust back to World War II era military technology, Nathan James must think fast to survive a fight with limited weapons capabilities.

With nations being rapidly occupied, Chandler tries his hand at diplomacy to unite two hostile countries so they can fight a common enemy.

As Nathan James and her allies attempt to prevent the enemy moving north, Chandler's haunting visions manifest into reality.

After months of fighting, the crew of Nathan James must embark on a dangerous mission to secure important intel that could decide the fate of the war.

Nathan James must seek the aid of a prominent rebel leader in order to create a staging area before mounting an invasion of their own.

Pinned down after days of fighting, Vulture team must find their way into a secretive enemy camp.

With a devastating hostage situation occurring back home, Chandler must devise the perfect plan to avoid losing everything.

The crew of Nathan James begin preparations for what may be their most ambitious mission to date.

It is all out war as Chandler must face his fears and confront the greatest threat he has ever encountered.