When Walter Robinson, a mentally disturbed young man afflicted with a disorder that prevents him from going out and mingling with the public, able to leave the house only at night and ramble the streets near his home, stealing kid's toys and listening at windows as people make love, sees a beautiful teenage girl move into the house across the street from his, he begins to think that his life-long dream about someone being sent from above to help him grow out of his lonely shell and live a normal life, thinking that she is the special one. From then on his every waking moment is spent plotting ways to kidnap the girl and take her to a maze-like hideout in his attic that he had constructed in his youth, as a way of hiding from his elderly grandmother and her servants, out of the many boxes of stored goods left there over the years. When competition for the girl came calling in the form of a young boy, Walter tries everything to scare him off, from warnings written in blood on the boy's car to threatening phone calls. Nothing works, yet he plots on. Finally Walter succeeds in kidnapping the girl, but gets in a fight with the boy before he can get her to his hideout. He ultimately knocks the boy out and then gets her to the hideout where he plans on having his fantasy fulfilled. Only the girl's father's persistence stands in the way of Walter's dream being fulfilled. He finally finds the attic hideout and ends up fighting with Walter for the girls very survival.