"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 !!!