The intrepid Captain "Bulldog" Drummond (John Howard) must try to rescue his kidnapped fiancée, Phyllis Claverling, who is being held captive by Drummond's old adversary Mikhail Valdin (J. Carrol Naish). The evil Valdin is wanted for the murder of an American tycoon in his native Paris. Drummond is aided in his search by his butler Tenny and his pal Algy Longworth, as well as Scotland Yard's Inspector Neilson (John Barrymore), a master of disguises.
