Moved by the desire for adventure and a yearning to help the Ute Indians, 20-year-old Shiloh Wainright impulsively accepts a teaching position at the White River Indian Agency in northwestern Colorado. Soon she finds herself caught in the crossfire between the Utes, their unyielding Indian Agent, and the unrealistic demands of the US government. Her unexpected encounter with Jesse Blackwater, an embittered half-breed Ute and childhood friend, only complicates matters.

The Caldwells and Wainwrights have been feuding for decades. Still, Sarah Caldwell has misgivings when her father pressures her into distracting a ranch hand while he and her brothers rob the Wainwright place. When it becomes clear that hand is actually Cord Wainwright, heir of the Wainwright holdings, Sarah realizes things have gone too far.

It is 1568 and Mary, Queen of Scots, is imprisoned in Lochleven Castle. But her supporters, including noblewoman Heather Gordon, are planning a rescue. Heather travels to a cottage in the frigid Highlands to teach a simple man--who just happens to resemble someone with access to Lochleven--how to act the part of a nobleman in order to gain entry to the castle. But in the close quarters of the cottage there is more stirring than political rebellion.