Vanya and Marinka spend every summer at neighboring dachas. And this year Seryozha also appeared in their company. They are already eight years old and have become completely independent. Friends understood that the summer would pass with adventures. But they didn’t even guess - with which ones! Hidden in the village... are precious stones! The guys will get one of them. The children decide to find out what kind of gems they are and who is looking for them. And what started here!.. Surveillance, escape, traps - this has never happened in their lives before. Read and live amazing adventures with three true friends!