In the Far Eastern village of Chernovka, surrounded by taiga and swamps, an emergency occurs: a sawmill burns down, and in the morning bodies are found there, burned beyond recognition. A young investigator, Evgenia Rakitina, arrives from the district center. The local authorities and the villagers themselves are trying in every possible way to hush up the case, writing everything off as an accident, but Evgenia's professional instinct tells her that something is wrong here. And the deeper the heroine delves into this matter, the more she realizes that the people here are not only related to each other. Comparing the testimony of witnesses, she concludes that she will have to look for the solution to the mystery in the past.…

Russia, 1917, WWI. This is the story of the 1st Russian Women's Battalion of Death, formed as part of an ill-conceived propaganda ploy by the Russian Provisional Government in late May of 1917.

During the exercise, the search and rescue squad receives a message about the child lost in the forest. While conducting a search operation, rescuers encounter an ominous entity: according to tradition, this is the restless spirit of a witch who died here long ago, which locals call Lame Widow. They believe that meeting Widow brings death.