Childhood sweethearts Cooper Sullivan and Lil Chance are reunited when Coop leaves New York to assist his aging grandparents on their South Dakota ranch, but Coop must come to Lil's aid when the unsolved killing of a hiker is linked to vandalism at Lil's wildlife refuge.

To inherit part of their father's estate, three sisters--each unknown to the others and the children of three separate marriages--must put aside their mutual bitterness and live together on their father's isolated, mysteriously violent Montana ranch