Savanyú and his friend work at a plant. After the monotonous shifts they engage in the pleasures of the afternoon and the night, i.e. parties and concerts. Savanyú dates Juli, they are already engaged. The young men live as sub-tenants, the young women in workers' hostels. None of these places are suited for spending time together. They are in need of an apartment. Out of the ruinous apartment which they lay siege on, however, they are sent away by the otherwise friendly policeman. At a concert held in the Park of Youth, Juli gets to know Géza. They flirt, then go to the country with a pop-group. Savanyú and his friends follow them. A minor fight cools the atmosphere.

The old comrades-in-arms, Csöpi Ötvös and Doctor Kardos, find each other again. They are still on the shores of Lake Balaton, this time on the trail of jewel thieves. The old team is joined by pretty, young policewomen.

This time the story is about car theft. Cars stolen in the same way will never be found again. They disappear like camphor. This time, Twitchy, Dr. Kardos, Havilúd and the others are working on solving this case.

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.