A young couple attend a masked ball before their planned (but secret) elopement. Suddenly everything goes wrong when the young woman is attacked and held hostage by a crazed attacker.
An inventor of a deadly weapon to be used against the allies is injured in a crash. Surgeon, Sir James (Sebastian Shaw) saves his life but learns of the inventors plot.
Based on the spectacular rise of bandleader and vaudevillian Harry Roy, this is the comic tale of a Ruritanian princess who elopes with a dance-band leader.
