explores the psychological madness within an obsessed, twisted, lonely individual, who misdirectedly lashes out with frustrated anger and power like an exploding time bomb at the world which has alienated him. Travis Bickle (Robert De Niro), an enigmatic, loner enters into the personnel office of a cab company. He applies as a driver in the taxi company to drive the taxi night shift, because he is an insomniac: "I can't sleep nights" and he finds nothing meaningful to do during the days. As a therapeutic solution to his life, Bickle even ....