The unique statue of the ancient fertility goddess Demeter, known as the "Pagan Madonna" is stolen from the museum, located in a small town on Lake Balaton. At the same time seriously wounded a servant of the museum. The abduction of the museum's priceless statues of pure gold is investigated by the then young and inexperienced investigator Kardos and lieutenant "Droplet".

There are mysterious murders in the area of ​​Lake Balaton. These places are shrouded in secrecy and constantly attract hunters: during the Second World War, the Germans had hidden a huge treasure here. Investigation of the murders entrusted to Major Kardos. He takes up the case, but in search of treasure he had many competitors. Kardos uses help from his loyal friend - a policeman-superman Etvash aka "Droplet".

Tomboy accidentally found a fake dollar and gave it to detective Droplet. The operation is headed by Maj. Kardos. Now they have to investigate the crime in order to find and neutralize the counterfeiters.

The continuation of the series about the adventures of Major Kardos and former police Lieutenant Droplet who are busy now with an investigation of an European drug cartel which operates across Greece, Hungary and Germany.