During the Civil War a Union soldier falls in love with a girl from a family with divided loyalties. His letters to her are the only surviving clues to his true identity. Now, his modern descendant (Kathy Evans) and her friend (Steve Knox) must take the letters and go on a desperate search for the truth in order to successfully claim an inheritance that is rightfully hers. Standing in their way is a corrupt estate lawyer unwilling to lose control of the trust fund. In the frequent flashbacks, James Franklinas growing relationship with his sweetheart and her border-state family arouses the suspicions and animosity of John Watts, a jealous and vindictive fellow soldier. Following several confrontations, in which he blames Franklin for his failures, Watts becomes convinced that Franklin has been sending military intelligence to the Confederates by way of the letters. The story builds to a climactic confrontation over the letters.