Unremarkable at first glance, the murders in different parts of the city lead a young investigator named Sergei into a maze of dirty old secrets. For a long time, Sergei can't understand the motives or thought process of the criminal. But one detainee gives him a good hint: the scenario of the killer's actions inexplicably resembles the plot of the cartoon "About the Silly Winky-String", which is shown on TV in the city of N. The intrigue grows, and as the murders continue, the events take on an increasingly sinister tinge.

Black Demon

Sardaana arrives at a village for work as a teacher. She meets a photographer Nyurgun, and he invites her to look at the museum full of spooky items. When Nyurgun is absent, Sardaana falls under the influence of the call of an ancient harp in a locked box. Not realizing what she's doing, Sardaana begins to play the harp. A vision comes to her, which she doesn't have time to realize.

The Cursed Harp

There is no escape from the war...  1942. While all the forces of the country are thrown into the fight against fascist Germany, in the southern part of Yakutia there are gangs robbing gold mines. The largest of them is the elusive and brutal Popov gang, which collects stolen gold to organize a military coup in the Far East. In their footsteps, a small detachment of the NKVD under the leadership of Senior Lieutenant Karasev is sent through the snow-covered endless taiga.