Independent and resourceful, Susy Hendrix is learning to cope with her blindness, which resulted from a recent accident. Her life is changed as she is terrorized by a group of criminals who believe she has hidden a baby doll used by them to smuggle heroin into the country. Alone in her apartment and cut off from the outside world, Susy must fight for her life against a gang of ruthless criminals, led by the violent, psychotic Roat. The tension builds as Roat, aided by his gang, impersonates police officers and friends of her husband in order to win Susy's confidence, gaining access to her apartment to look for the doll.