Kiera faces the immediate consequences of Alec's betrayal at the end of Season 2, when he disappeared in a flash of light with the time travel device Kiera hoped might send her home. Alec's impulsive decision sets in motion a chain of events which pushes Kiera into a shocking alliance with a former enemy. But, she must also contend with a newly strategic Liber8, and a growing darkness in her police partner Carlos. Ultimately, all roads lead to young...

In the year 2077, the ruthless leaders of the terrorist group Liber8 escape execution by time traveling to 2012, taking tough-as-nails cop Kiera Cameron with them. A stranger in a strange land, Kiera poses as a government agent and joins forces with police detective Carlos Fonnegra and teen tech wizard Alec Sadler to capture the terrorists before they can alter the future and turn the world upside down.

A nuclear mushroom cloud suddenly appears on the horizon, plunging the residents of a small, peaceful Kansas town into chaos, leaving them completely isolated and wondering if they're the only Americans left alive. But in this time of crisis, as sensible people become paranoid, personal agendas take over, and well-kept secrets threaten to be revealed, some people will find an inner strength they never knew they had and the most unlikely heroes will...