Near businessman Nikolay Amosov’s mansion, the body of his daughter Dana is found with a gunshot wound. Immediately, Colonels Gurov and Kryachko are sent to the crime scene. Almost as soon as they arrive, it becomes known that Amosov’s brother Viktor has also been killed. And he was killed with a pistol belonging to Nikolay Amosov. As Gurov begins arranging the events in chronological order, he learns that shortly before Dana’s death, she called someone named Nikita. And then it turns into nothing but secrets…