Release Message:  Doug (Robert Colbert) and Tony are transported to Russia on 16 June 1956, and soon they receive an F-5 probe from the Time Tunnel personnel with the message "Meet Alexis".

Description:  Doug and Tony are transported to Russia on 16 June 1956, and soon they receive an F-5 probe from the Time Tunnel personnel with the message "Meet Alexis". They meet the double agent Alexis that gives papers and free access to them to the facilities of the Russian Project A-13. They discover that Professor Anton Biraki has built a Time Tunnel very similar to theirs, and they have been assigned to pilot a doomed capsule in the first time travel. Meanwhile in the present days, Professor Biraki is in the United States offering his knowledge to the government.