An unlikely spy discovers freedom and love in the midst of the American Revolution.As the British and Continental armies wage war in 1781, the daughter of a wealthy Virginia plantation owner feels conflict raging in her own heart. Lydia Caswell comes from a family of staunch Loyalists, but she wavers in her allegiance to the Crown. On the night the British sail up the James River on a mission to destroy the new capital, Lydia discovers a wounded man on the riverbank near Caswell Hall. Fearing his identity but unwilling to leave him for dead, she secretly nurses him back to health. The man identifies himself as Nathan, a Patriot - and an enemy. But Lydia's American sympathies grow, and when British officers return to the plantation, Lydia must help Nathan escape. Privy to conversation among the officers at Caswell Hall, Lydia begins delivering secret messages to the Patriots in Williamsburg. When she overhears a plot to assassinate General Washington, she must risk her life to alert Nathan before it's too late.