Pioneers Do Not Die

Summer of 1980.
At the pioneer camp "Olympiets," there are often "nightmares" at night — scary stories told before sleep become reality! Sometimes a headless nurse walks through the corridors at night, sometimes black curtains appear at the windows, foretelling imminent death, and guitar chords from a dead gypsy camp can be heard...
But the horrors within the camp's walls are not as terrifying as the secrets it has kept since the war. When three pioneers go on a hike to the grave of a soldier from the Red Army to honor his memory, they begin to feel as though someone is watching them from behind the bushes. Soon their fears are confirmed: unknown individuals start to pursue the kids. Additionally, it turns out that someone has been digging up the shore of the lake near the camp for several nights, as if searching for treasure.
Every step towards their goal brings the pioneers closer to a terrible secret from the past and… to their own demise.