Mary Willis has always been an outcast, an abolitionist in a town of bounty hunters and anti-Union farmers. After college, she dreams of exploring the country, but is obligated to take over the household duties and management of her family’s farm. Helping runaways is the only thing that makes her life in Town Line bearable. When escaped slave Joe Bell collapses in her father’s barn, Mary is determined to help him cross to freedom in nearby Canada. But the wounded fugitive is haunted by his vengeful owner, and his sister, who is still trapped as a slave in the South. Rebels and soldiers from both sides bring intrigue and violence of the brutal war to the town and the farm, threatening to destroy all that Mary loves.