A graduate student and obsessive runner in New York is drawn into a mysterious plot involving his brother, a member of the secretive Division.

At an exclusive boys' school, a new gym teacher is drawn into a feud between two older instructors, and he discovers that everything at the school is not quite as staid, tranquil and harmless as it seems.

A stark portrayal of life among a group of heroin addicts who hang out in Needle Park in New York City. Played against this setting is a low-key love story between Bobby, a young addict and small-time hustler, and Helen, a homeless girl who finds in her relationship with Bobby the stability she craves.