The brutality of modern society is fast encroaching on the picturesque seaside town of Weymouth. American tourist Simon Wells (Macdonald Carey) is looking for a relaxing holiday but he is mugged by the psychopathic King (Oliver Reed) and his gang of thugs. Wells escapes with King's sister, Joanie (Shirley Anne Field), and they stumble upon a sinister establishment where nine ice-cold children are being subjected to a horrifying experiment. The shadowy authorities control of the base will stop at nothing to safeguard their secret, but it is the mysterious children who will doom them all!
