In a small English village everyone suddenly falls unconscious. When they awake every woman of child bearing age is pregnant. The resulting children have the same strange blond hair, eyes and a strong connection to each other.

Following a nervous breakdown, Gwen takes up the job of head teacher in the small village of Haddaby. There she can benefit from the tranquillity and peace, enabling her to recover fully. But under the facade of idyllic country life she slowly unearths the frightening reality of village life in which the inhabitants are followers of a menacing satanic cult with the power to inflict indiscriminate evil and death if crossed.

A young governess for two children becomes convinced that the house and grounds are haunted.