Fingers (George Cole) and his gang of crooks seem to be having a run of bad luck, as they keep botching one job after another. When they try to rob the wealthy philanderer Billy Gordon (Terry-Thomas) they manage to get things wrong once again and end up kidnapping his wife Lucy (Brenda Da Banzie) instead. Unfortunately, Billy is overjoyed to have his wife gone and makes no effort to pay the ransom, which makes Lucy mad and absolutely determined to have her revenge.

Anthony Asquith directs this wartime propaganda drama. When his actress wife Irena (Diana Wynyard) moves to Berlin to further her career, throat specialist Dr Karl Roder (Clive Brook) decides to accompany her, although he is vehemently opposed to the newly-elected Nazi regime. There he meets Hans Glaser (Derek Farr), a young engineer whose girlfriend has been incarcerated in a concentration camp. Together, they set up their own broadcasting service, Freedom Radio, to denounce the Nazi movement.