A small town's women give birth to unfriendly alien children posing as humans.

After a scientific experiment goes horribly wrong during a demonstration, a scientist finds himself trapped in an alternate reality that bears some similarities to our own, but also has some striking differences. In this other reality the Second World War had never occurred, mankind had not yet traveled into Space and Mt. Everest had not yet been conquered, just to name a few things. Also in this other reality he is no longer a scientist but rather a well known author. After a personal tragedy in this alternate world, he finds himself back in his own world and desperately trying to locate the woman he fell in love with in the other world. Little does she know, however, that her life depends on him finding her.

Six impossibly intelligent children from all over the world with dangerous psychic powers hide in a church in England after the military tries to experiment on them. Besieged, they warn the military to back off before carnage ensues.

After an unusual meteor shower leaves most of the human population blind, a merchant navy officer must find a way to conquer tall, aggressive plants which are feeding on people and animals.

In the English village of Midwich, the blonde-haired, glowing-eyed children of uncertain paternity prove to have frightening powers.