Llewelyn Moss who stumbles on a bloody crime scene and a pickup truck loaded with heroin and two million dollars in cash. His decision to take the money he found sets off an unstoppable chain reaction of violence. As an enigmatic killer who determines the fate of his victims with the flip of a coin sets out in pursuit of Moss, the disillusioned Sheriff Bell struggles to contain the rapidly escalating violence that seems to be consuming his once-peaceful Lone Star State town.