A fugitive monarch escapes confinement, plunging the kingdom into panic as a regent and his allies move to recapture him and secure power. An outsider, Barney Custer, becomes entangled with loyalists, spies, and a woman who recognizes the fugitive, and repeatedly intervenes in rescues and betrayals. The plot shifts from court intrigue to open battle, a rival claimant is exposed, and loyalties realign to decide the throne. Themes of identity, loyalty, and the conflict between individual courage and political manipulation run through the brisk adventure.