A story of the First World War, told in semi-documentary style, focusing on the iniquities of the German war machine, and with its dramatic center the sinking by a German U-boat of the passenger liner Lusitania in 1915.
The plot is a loose autobiographical interpretation of the life of Vernon and Irene Castle, interspersed among a typical melodrama of the period
A distinguished young Naval officer from a celebrated military falls prey to a terrorist and his seductress accomplice bent on destroying the Panama Canal.