The Day of the Triffids is a 1962 British film adaptation of the science fiction novel of the same name by John Wyndham.
Triffids are strange fictional plants, capable of rudimentary animal-like behavior: they are able to uproot themselves and walk, possess a deadly whip-like poisonous sting, and may even have the ability to communicate with each other. On screen they vaguely resemble gigantic asparagus shoots.
Bill Masen begins the story in hospital, with his eyes bandaged. He discovers that while he has been blindfolded, an unusual meteor shower has blinded most people on Earth. Masen finds people in London struggling to stay alive in the face of their new, instantly-acquired affliction, some cooperating, some fighting: after just a few days society is collapsing.