When Will Grafton's wife is gunned down in a bungled robbery, the middle-aged grocer vows to bring the killers to justice. Grafton hasn't always been a grocer and, as he pursues the ruthless Vallence Gang, it soon becomes clear that the odds are not as unevenly stacked as might at first have been thought. From the quiet California town of Alila, Grafton's quest leads him inexorably to a bloody showdown in Kansas – a fight from which only one man can emerge alive.