Dr. Tony Newman (James Darren) sets all the controls and them disappears into the Time Tunnel. Located beneath the Arizona desert, Project Tic Toc examines the feasibility of time travel. But when the government reconsiders the project, the scientists have only 24 hours to prove their untested "Time Tunnel' will actually work. Determined to save the project, Dr. Tony Newman and Dr. Doug Phillips go through the tunnel and quickly find themselves catapulted from one historical event to another, barely escaping with their lives as their colleagues back in Arizona race to figure out a way to bring them back home.

The Time Tunnel was a 1966-1967 U.S. color science fiction TV series produced by Irwin Allen. It lasted one season of 30 episodes on ABC. The final episode provides no resolution, because the series was cancelled.