Joyce Harper is an ex-Army nurse who enters police work with the L.A. Police Department, when her friend Ruby gets involved with a petty crook, Max Taylor refuses to listen to Joyce's warnings, and eventually marries the hoodlum. Joyce gets through the detailed trained required to become an L.A. policewoman, and she and her newly-assigned detective partner, Harvey Gates cleanup up a skid-row Bar-girl scheme.And she and Gates are told to get the goods on a narcotics gang ran by Richard Cott , and Ruby and Max Taylor reappear.