The Time Tunnel plot
Scientists Tony Newman and Doug Phillips are the young leaders of Project Tic-Toc, a multi-billion dollar government facility buried beneath the desert. They invented a time tunnel that allows people to get anywhere in time and space. While testing the tunnel for an impatient senator, Newman and Phillips got caught up in time, and each week they happened to find themselves at the site of a major historical event, be it the Siege of Troy, the sinking of the Titanic, or the an assassination attempt on President Lincoln. Sometimes they traveled into the future and battled alien invaders.