Historical Precedent

In the near future time travel is possible. Some believe small changes to the past can bring them profit or political gain in the present. The reality is that even small changes in the past can have catastrophic consequences. When historical changes threaten, only a small covert team of specialists can prevent disaster. The specialists of the National Historical Preservation Institute (NHPI) travel into the past and do whatever it takes to insure that the way it happened the first time is the way it remains. The mission is simple, regardless of risk or cost, protect the Historical Precedent.