1975 film

One day in the life of a simple Soviet family. Spouses Stepanov's on that day decided to terminate the marriage, for which they need to appear in the people's court. This day is not the most successful for them. They leave their little daughter Dunya to the brother of Nadya Stepanova — Nikita. But for him this is also not a very successful day: recording on the radio, an exam at a theater institute, and even a quarrel with his girlfriend...

Polish schoolboy Janek, and Russian girl Tanya are traveling by a plane which ended up in the hands of a gang of drug dealers headed by ex Nazi criminal Henrich Scharf.

For many years, a prominent scientist had been striving to solve the problem of immortality. He shared the results of his daring and risky experiments with his colleagues. But one day something happened that no one could have foreseen: the professor had disappeared. The best student and follower of Professor Dowell tries to use the results of his scientific research for criminal purposes.