A small supermarket in a blue collar town, a black man smiles at a 10 year old white boy across the checkout aisle. This innocuous moment sends two gangs into a ruthless war that ends with a shocking backlash.

A man has been trained in a deadly form of hand-to-hand combat using ballistics and firearms. He is one of the few Americans who has perfected it, which makes him the CIA's best weapon against International Terrorism.

Shifting from one pocket to another, from one man's drama to another, a lowly dollar bill, 'one buck' takes us on an odyssey through the heart of a forgotten town in Louisiana.