I.O.B. Spezialauftrag' was a German crime television series after Percy Stuart and Sergeant Berry that featured an American hero.

Leni Gruyetin, a resident of Nazi Germany, lives a tumultuous life as she bears witness to the fascist regime of the Nazis.

Two old sea dogs are fighting to the teeth for customers for a coastal cruise. Three crooks turn up at the resort and try to get a briefcase full of valuable jewelry out of the three-mile zone. A rich "Frenchwoman" is also involved in the affair. An insurance agent mingles with the tourists without being recognized in order to track down the jewel thieves.

Leo, the owner of the stocking product "Discrete", has driven his company into the wall; the company is virtually bankrupt.