Driving back from a weekend in London, Richard and Janet Gayford are surprised to find the village of Midwich sealed off because of 'army manoeuvres'. There are no birds singing, the air seems thick and there is a strange sort of music in the air. It soon becomes clear that there is an invisible wall around the village, and everyone within the perimeter is unconscious. When the barrier lifts, the strange occurrence is put down to a gas leak. The villagers seem to have suffered no adverse effects from their 'day out' - until, some months later, there is an epidemic of pregnancies among the women. All the babies are born on the same day, all have golden eyes - and they can all communicate with each other telepathically. As they grow older and their powers grow stronger, the people of Midwich begin to feel threatened...