Irina likes being on maternity leave so much that she’s considering leaving the judge’s bench and devoting herself to family. But if you’re an in-demand specialist, work will find you. A friend of Kirill, writing a dissertation on serial killers, asks her to share her experience—and unexpectedly, for herself, Irina gets pulled into investigating a string of strange deaths of young women. To learn the truth, she must team up with Prosecutor Makarov, a ruthless official, whose involvement almost ruined Irina’s career.