When the senate threatens to cut off funding for Project Tic-Toc, Tony Newman and Doug Phillips set out to prove that the project is viable, but instead they are trapped moving from one past time (perhaps the Titanic!) to another (could be the first manned mission to Mars) each week.
He could be living in yesterday or next week or a million years from now.

Variants

(1)
  1. The Time Tunnel by Irwin Allen (9 September 1966).
  2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . written by Irwin Allen