After having obtained a mild sentence for a gang of burglars who robbed a casino and never made the loot be found, Dr. Renz announces to Matula his intention to retire and move to a farm he is buying in Italy. But when the loot is found in Renz's home and several evidences point to him, he is arrested. Matula finds for him a young lawyer, Dr. Rainer Franck, whom he had met shortly before at a motocross event and who had just stolen his girlfriend.