Eternity is an organization and a place which exists outside of time.
It is staffed by humans called “Eternals” capable of traveling “upwhen” and “downwhen” within Eternity and entering the conventional temporal world at almost any point of their choice. Collectively they form a corps of Platonic guardians who carry out carefully calculated and planned strategic minimum actions, called Reality Changes, within the temporal world in order to minimise human suffering as integrated over the whole of (future) human history.
Andrew Harlan, an expert in executing Reality Changes, falls in love with a non-Eternal as he comes to understand his part in a paradoxical scheme to secure the creation of Eternity by sending a young Eternal back in time with the mathematical knowledge to make it possible…
First of all – this rare to find Soviet film stands apart from the many others sci fi movies of that time in the USSR. It deals with the idea, that some real people could get immoratlity by means of controlling the time periods inside the special lab-city called “Vechnost”. They look like people but they are trained to work for Vechnost forever, as a part of its mechanism. They correct time holes,help people from other time to solve their problems by means of special mind- operating system.
Everyone from Vechnost is immortal and they live in a very futuristic looking like place in the center of time , but some periods of time blocked from them, so two engineers are sent to solve the problem. Very moody and hypnotic film. I liked it more than “Solaris”