Joan Grey is a young pianist that falls for the good manners and nice clothes of a gang of mobsters. She is warned by Mark Hampton, an investigator, that she is associating with gangsters and she is heading for trouble. She refuses to believe him and becomes innocently involved in some robberies and killings.

A petty thief schemes a big score when he plans an armored car robbery.

Billy "The Kid" Bonney is a hot-headed gunslinger who postpones his life of crime when he is befriended and hired by peaceful cattle rancher Eric Keating. When Keating is killed by a rival, Billy seeks revenge, even if it means opposing his old friend, Marshal Jim Sherwood.