When former Air Force officer and NSA agent Ron Moosic is assigned for special duty in charge of security for a nuclear power plant, he has no idea that the plant is only a cover for a top-secret project involving time travel.

The government has discovered a way to travel back in time and is sending secret observers to different periods. But there are serious limitations with the time travelling process. All travelers are automatically "re-born" into someone who is actually alive during the historical period, and staying in the past for too long causes memory loss and the risk of...