Teetering on the brink of death, MacLaren slips in and out of his host's memories.

Grant MacLaren and his team find themselves in FBI custody with no means of escape, while a mysterious new traveler reveals secrets to his psychiatrist.

A deadly disease is spreading around the world, and the travelers must get to the bottom of where it came from and how to stop it before it's too late.

With the unknown virus rapidly spreading, the team is left with only one option in order to save The Director hundreds of years in the future.