"Mystery Known to Everyone" (Russian "The Secret to All") - Ukrainian Soviet Children's Musical Film, 1981, directed by Nikolai Zaseev-Rudenko. Production of the Alexander Dovzhenko Film Studio. A film about how the guys from the pioneer camp on the Black Sea coast invited vacationers near famous actors to take part in a sporting holiday. Pioneers can do it all! And to make carnival costumes from the handicraft materials, and the artists to get a holiday! CRIMEA IS UKRAINE !!!

A story about a little dreamer, about the next summer, about the first sympathy for the girl. Another film about children's friendship, the mutual sympathy of the main characters, 12-year-old boy and girl, the first timid feeling for each other. After all, the first children's love - for that and the first to break out in the rapidly disappearing from our childhood, flare up brightly like a torch, and then burn forever, but alas, only in our memories.

A group of Russian teenagers spend their summer at a summer camp. Mitia falls in love and gets so occupied with his own problems that he forgets the others. The story of a young man experiencing an existential journey. It is not about the other characters per se, but rather, what these characters bring to Mitya's experience. Mitya's experience is in contrast to what is going on around him in the physical sense.

Young pioneer-leader Ivan is trying to gain credibility among the twelve-year hooligans. Cope with them can only experienced teacher - pioneer-leader Alexandra Petrovna. On top of that, a group of guys run from the camp to the forest, where they bake potatoes in the ashes and sing songs. For this they are threatened with an exception from the pioneer camp. Ivan decides to postpone his studies, take bail for children and join the pioneer life. He takes part on an equal footing in the daily life of his detachment and wins authority.