I vaguely recall a TV play set in the future. Everyone lives underground, maybe

after a nuclear holocaust & everyone relies on technology to do everything for

them. There is a scene where someone drops a cushion & part of the floor

shoots up & places it back. The most vivid thing I remember is that a young

couple rebel & get out on to the surface only for the girl to be caught & killed by

a cable sent out from underground. Ring any bells?