The action takes place in Midwich, a small English town with neat central streets and wealthy houses. A place where nothing special happens. At least, that was the case until the twilight of a summer day, when the town suddenly plunged into darkness and panic. Passersby unexpectedly began to lose consciousness and fall to the ground. When the electricity is restored, life returns to normal, except that every woman of childbearing age discovers that she is pregnant.