In 1945 a group of victorious American officers discover a stash of German jewels and try to fence them in New York.

Ditzy police cadet Sissy goes undercover in a security prison to get the goods on World Famous Jewel Thief, Maggie. Once inside she uncovers a devious plot headed up by the wicked Warden.

A jazz singer and a British jewel thief are brought together by their mutual desire to forget the past.

An inspector and an insurance investigator both have a major stake in revealing the identity of an audacious jewel thief.