Grunwald, a sadistic supervisor, takes over a run-down shelter for the blind is owned by a cruel man and abuses the patients - tormenting them with loud noises, cutting their food budget, using his vicious dog to attack them, etc. A new blind girl, Shelly, arrives and the owner promises to lighten up if she agrees to sleep with him but he lies to her. Benny and the other patients give the owner from hell a taste of his own medicine - with help from Grunwald's brother, they lock the supervisor up and starve his dog while building a wooden maze. They let him out and he finds himself in a narrow corridor lined with razors. Grunwald makes it through the corridor just as the patients release his dog - when he turns to move back down the razor-hall they turn off the lights, leaving him to meet a bloody demise.