Capt. Hugh Chesterton 'Bulldog' Drummond (John Howard) is engaged and about to be married to Phyllis Clavering (Heather Angel.) However he has to put it off as he is the suspect in a murder. The real murderer bumps off a scientist, beware of the stinger, who invented a laser type death ray that is designed to blow up gunpowder from a distance.
Will Bulldog get the bad guys before they can hatch their insidious plot? Or will Col. J.A. Nielsen, "don't call me inspector', incarcerate Bulldog?
Phyllis takes a positive role and the bad guys anticipate her interference.
The recording of this film is "z" you would never guess that in the same year they made "Gone with the Wind".