Thad and Hazen live off the grid, struggling with debt after the death of their father. Thad, the elder brother, is the capable one, while Hazen is a dreamer, more in tune with the wilderness than with people. Then a shadowy out-of-towner called the Scot appears --- dressed in a kilt and with a mysterious young woman in tow. He makes the brothers a proposition that is both lucrative and a federal crime --- removing resources from Yellowstone National Park, a scheme that becomes more appealing when their long-gone mother shows up, raising troubling questions about the past.