The Mommy ​tells the story of John Pressman (Michael Lerner), an extermely myopic, uncontrolled diabetic who works as an ophthalmologist's assistant and is progressovely growing bilnd. For unstated reasons , his overbearing mother Alice (Zelda Rubinstein) hypnotizes him and induces him to murder people so that he can remove their eyes and bring them back to her. One evening, John-against his mother's wishes-barricades himself inside of a movie theater palying The Lost World, ​where he sets about killing the patrons one by one with a scalpel. Once John's rampage becomes apparent, the surviving moviegoers attempt to flee the now sealed-off theater. The police bring Alice to the theater in an attempt to end the siege; in the course of trying to talk John down, Alice is accidentally shot to de