November 1917. William Moreland is in mid-flight. After nearly 20 years, the notorious thief, known as the Ridgerunner, has returned. Moving through the Rocky Mountains and across the border to Montana, the solitary drifter, impoverished in means and aged beyond his years, is also a widower and a father. And he is determined to steal enough money to secure his son's future. Twelve-year-old Jack Boulton has been left in the care of Sister Beatrice, a formidable nun who keeps him in cloistered seclusion in her grand old house. Though he knows his father is coming for him, the boy longs to return to his family's cabin, deep in the woods. When Jack finally breaks free, he takes with him something the nun is determined to get back - at any cost.