Bulldog Drummond (John Howard) journeys to the Dark Continent to hunt for Col. Nielson (H.B. Warner), who has been kidnapped by spies after the plans for a radio-defense system. Drummond is joined on his rescue mission by loyal girlfriend Phyllis (Heather Angel) and trusted valet "Tenny" Tennison (E.E. Clive). With J. Carrol Naish, Reginald Denny; look for Anthony Quinn. 58 min. Standard; Soundtrack: English.