Vietnam vet, Travis Bickle (Robert De Niro) works as a loner night-shift cabbie in New York. Roving the streets, he kills time by keeping a diary, popping pills and hanging out in porn theatres. A series of frustrations and his encounters with a 14 year-old prostitute (Jodie Foster) compel him to clean up the sordid milieu in which he operates. His answer, NO-HOLDS-BARRED VIOLENCE.