Travis Bickle is an ex-Marine and Vietnam War veteran living in New York
City. As he suffers from insomnia, he spends his time working as a taxi
driver at night, watching porn movies at seedy cinemas during the day,
or thinking about how the world, New York in particular, has
deteriorated into a cesspool. He's a loner who has strong opinions about
what is right and wrong with mankind. For him, the one bright spot in
humanity is Betsy, a worker on the presidential nomination campaign of
Senator Charles Palantine. After an incident, he believes he has to do
whatever he needs to make the world a better place.