In a world thrown into chaos, our hero fights to survive and finds a companion to help. The triffids (giant alien carnivorous plants)had used a weapon disguised as a meteor shower to blind the populous of Earth before they started their take-over of the planet... Our hero, Bill, had his eyes bandaged after an attack by one of the monstrous plants. So by being temporarily blinded at the time, saved him from viewing the "meteors" and thus being permanently blinded by them.
As he leaves the near abandoned hospital he sees the utter anarchy that's resulted from the world being stricken blind... gang roam the streets using savagery and numbers to loot and thieve what they need... others who have been "lucky" enough to find one of the sighted, put them on a leash and treat them like animals in search of food and supplies... Bill finds a young woman who was being held captive by an older man... He saves her and together they try to think of some way to survive.