In this movie, Travis Bickle(Rob) is a lonely taxi driver in New York City.  He is very cynical af everything around him and is very lonely and isolated from everyone and everything because he fails again and again in his simple quest of human relationships and companionship.  He becomes fed up with the scum and filth he encounters daily in NYC and becomes more and more isolated.  His life changes one night when he runs into this young prostitute Iris(Jodie Foster) and dicides that he must help her, recue her from the scum of the city.  I really don't want to give this movie away but it made it onto the American Film Institute's (AFI) 100 best american films list.  It was put on that list for a reason.  You'll wanna own this movie.