Robin Heatherton is a spy for the Confederacy. Disguised as a young boy, she infiltrates Yankee forces during the Battle of the Wilderness, but when her cover is compromised, she must crawl back to her own lines with vital intelligence. Meanwhile, Union Army Major Thomas Corley, obsessed with Robin ever since her espionage work led to the death of his brother, has vowed to track her down, and to kill her. Her husband dead at the hands of the Yankees, Robin flees with their five-year-old son into the untamed reaches of the Colorado Territory, where she'll try to work a gold-mining claim-helped only by gruff, handsome Garrison Parker, a Union veteran with no respect for women. She'll teach him some...unless Corley finds her first.