Drummond goes up against foreign agents who are trying to steal plans for a top-secret aircraft.
Michael is a young Englishman abroad who deliberately visits a tough Chinese district of Tiger Bay to test his strength. He falls in love and battles a protection racket.
A industrialist has a row with his son, who leaves home. Meanwhile, both his assistant and solicitor conspire to embezzle a fortune in bonds. A plucky young newspaper reporter pursues the rich man's daughter.
