The show follows the journey of a time traveler, Cole, from a post-apocalyptic future. Cole arrives in the present day via a dangerous and untested way of time travel, with the mission to eradicate the source of a deadly plague that will eventually shrink 93.6% of humanity. Will Cole be able to save the fate of humanity, or is the fate of humanity fixed? All of this takes place in the future havoc of 2043 and today.