On a beautiful clear night, people around the world are treated to a spectacular meteor shower. In London, Bill Masen misses the show as he is in hospital with his eyes bandaged. The next morning he awakens to find no one answering his bell. He removes the bandages himself and soon realizes that he one of the few people with sight as everyone who observed the meteor shower is now blind. Society has broken down and Bill rescues a young sighted girl. Their challenge is not only to survive in this new world but to survive the onslaught of triffids, flesh eating plants that are now growing rapidly and consuming humans.