Bill Masen wakes up in a London hospital to a world turned upside down. A spectacular meteor shower has blinded nearly everyone on Earth, leaving society in chaos. As if that wasn't enough, the triffids—tall, venomous, mobile plants that were previously farmed for their oil—have broken free and are now hunting the sighted survivors. Bill must navigate this dangerous new world, teaming up with other seeing people to try and build a future while avoiding the deadly plants that now rule the land.