I watched a black-and-white short-story when I was a kid on TV many years ago. The plot involved humans that lived below ground in a highly technological age and never ventured to the surface and never had human contact; every need was satisfied by an enveloping machine. I think the surface of the planet was unsafe because of fall-out or similar.
The girl in the story ventured to the surface of the planet and found it safe but the machine searched the girl out and dragged her back underground with telescopic arms, killing her. The rest is a mist to me.
I think the film was based on an Asimov short-story, maybe Aldis, but one of the greats.
I often think of the film and would love to watch it again. Any clues on the title or show. Maybe 'Strange Adventures' - something like that.