History teacher and coin collector Karl Schneider wants to track down an ancient coin while on vacation in Bulgaria. When he meets a group of musicians, he finds out that their singer Jana Christova is wearing this coin around her neck. He falls in love with her, but the young love soon faces some unexpected troubles. His travel companion, the pop singer Theobald, accompanies the events with music.
What happens when a distracted newspaper editor-in-chief initials a "yes" to print a sharply critical feuilleton and a "no" to the feuilleton author's application for leave instead of the other? Well, an incredibly funny mess, which only the screenwriter Radoy Ralin and the director Vladimir Yanchev can mix. Of course, supported by the whole constellation of comedians that Bulgaria had in the early 60's. The commotion occurs when dozens of big and small bosses and directors from all over the country recognize themselves in Karaivanov, the fictional hero of the feuilleton. They all run to the editorial office to demand refutation and punishment of the author. Just watch as they bury themselves in an avalanche...
The main heroes are twin brothers. The first is responsible young fellow and excellent footballer. The second one is an undependable gambler. The police are after him. A pretty girl stands in between them. She has profoundly fallen for the footballer. By coincidence, the twins change places, which result in a formidable mess and funny situations. Ultimately, all the misunderstandings are settled and the couple re-joins.
This is a typical story from the 'cold war' era. A group of kids play on a quiet street in Sofia. From a nearby window falls a key. The helpful youngsters quickly return it to the owner, but in the haste switch the keys. The unintentional error disentangles a whole spy story. The young detectives doubt the good intentions of the man they tried to help. It turns out that the key is from a secret apartment where saboteurs are hiding. The secret network is exposed to the authorities and the kids feel like heroes.
