Crime photographer Nellie Burns and Basque Sheriff Charlie Asteguigoiri travel from central to northern Idaho to investigate bootlegging and possible complicit town officials. A suspicious mine explosion pulls them into a second investigation. They wire retired miner Rosy Kipling to join them. He brings Nell's black Lab, Moonshine. While Charlie roams the backcountry in search of illegal stills, Nell questions survivors of the explosion. Rosy descends...