In 2090 AD, the use of time machines called interkrons is regulated by officers of the Temporal Corps. Travel into the past is strictly prohibited because of its potential effects on the timestream and current civilization.

Zeke S. Vettenmyer, a lieutenant in the Temporal Corps, has stolen an interkron and gone back into the past. He has subtly altered historical situations so that the outcomes of these events will be changed.

You are a private in the Temporal Corps, sent to pursue Vettenmyer across 3,000 years of history. You must visit the times and places he has already been and reverse the changes threatening the future.