Suffering from insomnia, disturbed loner Travis Bickle takes a job as a New York City cabbie, haunting the streets nightly, growing increasingly detached from reality as he dreams of cleaning up the filthy city.
As her marriage dissolves, a Manhattan writer takes driving lessons from a Sikh instructor with marriage troubles of his own. In each other's company they find the courage to get back on the road and the strength to take the wheel.