Hyperion (1975)

Thea, a researcher from an institute for nuclear studies, leaves for a vacation but ends up on an adventure at the boundary between fantasy and reality. On the TV screen the image of a man appears who disappeared 20 years ago after a nuclear explosion. She falls in love with this picture and convinces a colleague and close friend that they can bring back the man who disappeared through a strange reverse process. Her only way to communicate with this picture however is via the TV screen, and her love can only be communicated through dreaming.